--- Catherine, will you visit us this weekend?

--- I planned to, but something unexpected _____.

A. has come up B. was coming up

C. had come up D. would come up

Scotland voted against independence；more than half of the people chose _____ part of the United Kingdom.

A. remaining B. remained

C. to have remained D. to remain

--- Bob, could I use your computer this evening?

--- Sorry. I _____ a report on it then.

A. will be writing B. have been writing

C. have written D. will have written

Beijing successfully held the 2014 APEC meeting, _____ won high praise from the member countries.

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

The unemployment rate has decreased _____ 2% to 5.4%, compared with 7.4 % last year.

A. by B. from C. with D. on

Give my regards to your parents when you _____ home.

A. will call B. call C. have called D. called

Language is changing all the time. Some English words today can mean totally different things to _____ they meant before.

A. which B. that C. 不填 D. what

Don’t run red lights, _____ you may get run over by a car.

A. so B. but C. for D. or

The young man, _____ in heavy traffic on the way, got home an hour later than usual.

A. catching B. caught C. having caught D. to be caught

My mobile phone is missing. Who _____ it?

A. must have taken B. should have taken

C. could have taken D. need have taken