It has been two years _________ he came to China. A．sinceB．afterC．beforeD．till
题型：不详难度：来源：
It has been two years _________ he came to China. | A．since | B．after | C．before | D．till |
|
答案
| A |
解析
| 本题考查的是since引导的时间状语从句，since引导的从句为一般过去时，其主句为现在完成时，故选答案为A |
举一反三
While we _________, we saw a UFO land on a street. | A．were shopping | B．shopped | C．are shopping | D．shop |
|
The children will climb the hill if it _____ tomorrow.| A．won’t rain | B．didn’t rain | | C．doesn’t rain | D．isn’t raining |
|
The teacher with his students _____ playing _____football at this tine yesterday.| A．was; the | B．is;the | C．were ;/ | D．was; / |
|
Take an umbrella with you if it ______ tomorrow.
A. rain B will rain C rains D is raining |
I have a lot of homework to do today, _________ I cannot go swimming with you. |
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