People should be ... and wear masks when going out these days.

A. care

B. carefully

C. careful

D. carefulness

The book ... i read yesterday was written by Jack London.

A. what          B. who          C. which          D. when

Is there ... university ... this town?

A. an - at

B. the - in

C. a - in

D. an - in

City dwellers are more likely to ... stress and anxiety than people who live in the countryside.

A. put up with          B. get over          C. suffer from          D. look forward to

Peter ... have lunch in the school canteen when he was in grade 6.

A. was used to          B. is used to          C. used to          D. gets used to

This is a difficult problem. I wish i ... the answer.

A. knew          B. knowing          C. know          D. known

Michale felt tired. ..., he went to work and tried to concentrate.

A. However          B. Therefore          C. So          D. But