John would be taking a great risk if he _____ his money in that business.

A. would invest

2.   invested

C. had invested

D. invests

Three kilos of potatoes ... the basket heavier.

A. do B. does C. make D. makes

Both Peter and his girlfriend.......... working for a bank.

A. are B. is C. be D. is being

John or you .......... . to be responsible for the unfinished work.

A. is B. are C. have D. has

No one.........the right to tell me what to do or not to do.

A. has B. have C. is having D. are having

My sister, together with her two children, ........... to Hawaii at the moment.

A. flies B. fly C. is flying D. are flying

Korean ........... very hard to learn.

A. is B. are C. be D. were

Here.........the clown that you.............. best.

A. come/like B. comes/likes C. come/likes D. comes/like

Every boy and girl in this room ... the answer.

A. known B. know C. knows D. have known

The police ... come to the site of the accident.

A. have B. has C. has been D. have been