Read these sentences and fill in the gaps with 'could', 'can', 'couldn't', 'can't'.
1. Mary tried hard to persuade her friend but she (.) change her mind.
2. Mike was the only one who (.) understand me, but now he can’t either.
3. We (.) choose our opponents. The teams will be matched randomly.

listen, ivan singing in the room.

he doesn't see that i look at it, as he reads something with a great interest.

call him now. i think that he doesn't sleep yet.

look at the person who sits at a window. he/she is our lawyer.

Auditor actuary analyst banker broker accountant dealer sold the collector commercial director credit consultant marketer broker exchange manager on work with clients the tax inspector the representative entrepreneur the quantity surveyor buyer insurance agent relater merchandise sales representative the trend watcher trader the economist the freight forwarder financier the cashier the medical profession obstetrician-gynecologist the allergist-immunologist andrologist military field surgeon anesthesiologist bacteriologist venerologist vertebrologist virologist the doctor ambulance the doctor of ultrasonic diagnostics physician category doctor of functional diagnostics gastroenterologist girudotherapist geneticist the hepatologist. homeopath the hematologist nutritionist infectious immunologist cardiologist cardio physiotherapist cosmetologist doctor of clinical laboratory diagnostics speech therapist chiropractor masseur mammalogist nurse psychiatrist neurologist neonatologist neurosurgeon the nephrologist oncologist orthodontist orthopedist otolaryngologist ophthalmologist the pathologist pediatrician plastic surgeon the podiatrist protector proctologist pathologist psychiatrist psychoneurobiology psychotherapist pulmonologist radiologist resuscitator the rheumatologist radiologist reflexologist reproduction nurse family doctor specialist in cellular technology sports physician somnologist dentist the audiologist thanatology therapist thoracic surgeon traumatologist the transfusion trichologist toxicologist pharmacist paramedic physiotherapist phlebology tb surgeon endocrinologist the endoscopist epidemiologist efferentia the profession of science bioengineer scientist anthropologist archaeologist archivist astronomer astrophysicist estrogenic bacteriologist biologist biophysicist biochemist biblioteque botanist (occupation) virologist orientalist geneticist geographer surveyor geologist hydrologist glaciologist egyptologist zoologist art historian ichthyologist logics cryptozoology cultural studies linguist mathematician mycologist microbiologist meteorologist oceanographer ornithologist paleontologist the scientist the expert serpentor sociologist theologian mammalogy physicist philosopher philologist futurist chemist ecologist entomologist the profession of informatics and communications database administrator web integrator webmaster the installer link the operator pc programmer encoder web programmer radioman

1. ann has got a cat. -  ann`s cat is brown.

2. sam has got a rabbit. -  sam`s  rabbit is  white.

3. tim has got a bag. - tim`s bag is red.

4. pam has got a hat. - pam`s hat is purple.

5. jim has got a stick. - jim`s stick is black