Question

【题目】We had invented many new things _________ last year.

A. by the end of B. by the time of C. in time of D. last time

Answer 1

【答案】A

【解析】句意：到去年年底我们已经发明了许多新东西。A. by the end of到……结束时；到……时为止；在……之前；B. by the time of到……的时候；C. in time of在……的时候，在…时候；D. last time上次，最后一次。结合句意和语境可知选A。