My book, The House of Hales, is missing. Who ________ have taken it?
A. need B. must C. should D. could
The young couple, who returned my lost wallet, left _______ I could ask for their names.
A. while B. before C. after D. since
We would rather our daughter ________ at home with us, but it is her choice, and she is not a child any longer.
A. would stay B. has stayed C. stayed D. stay
During his stay in Xi’an, Jerry tried almost all the local foods his friends ________,
A. would recommend B. had recommended
C. have recommended D. were recommending
I’d appreciate ________ if you could let me know in advance whether or not you will come.
A. it B. you C. one D. this
________ the difficult maths problem, I have consulted Professor Russell several times.
A. Working out B. Worked out C. To work out D. Work out
