We went through a period ________ communications were very difficult in the rural areas.
A. whichB. whoseC. in whichD. with which
To get evidence of the murder, the police ________ the whole house ________.
A. made, search forB. had, searched
C. made, searched forD. had, searching
The year 1949 ________ the birth of a new country — the People’s Republic of China.
A. happenedB. gaveC. hadD. saw
Eric received training in computer for one year, ________ he found a job in a big company.
A. after thatB. after whichC. after itD. after this
Even though we have made much progress in preventing pollution, yet much ________.
A. is remained to doB. remains being done
C. remains to be doneD. is remained to be done
The thought of going back home was ________ kept him happy while he was working abroad.
A．thatB．all thatC．all whatD．which
