The pupils here ______ all kinds of exercises every day in the past four weeks.A.kept busy doing

The pupils here ______ all kinds of exercises every day in the past four weeks.A.kept busy doing

题目
The pupils here ______ all kinds of exercises every day in the past four weeks.A.kept busy doing
The pupils here_all kinds of exercises every day in the past four weeks.
A.kept busy doing B.keep on doing
C.have kept busy doing D.have been kept busy doing.
选什么,为什么
答案
正确答案是 Devery day in the past four weeks 意为:在过去的四个星期中的每一天in the past four weeks 此时间状语常用于完成时态,故可排除 A 跟 Bpupils(小学生)不会是自己在四个星期的每一天做各种各样的 exe...
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