Question

4. We'll reach the sales targets in a month   we set at the beginning of the

year.

A. which    B. where

C. when     D. what

Answer 1

4.    A考查定语从句。此处先行词targets被in a month所扰， 易错把month当成先行词而误选C。targets在定语从句中作set的宾语，所以关系词应用which或that。故选A。