They ______ many happy hours ______ along the beach during that holiday. |
A. spend, walking B. spent, walking C. cost, walking D. gave, walking |
A large number of students _____ in the classroom. The number of them _____ about 100. |
A. is; are B. are; is C. be; is D. are; be |
During the winter vacation, I ______ sleeping late. |
A. used to B. was used for C. was used to D. use to |