针对训练
Ⅰ
.完成句子
．The twins，who ________ (finish)their homework，were allowed
to play badminton on the playground.
答案】ꢀhad finished
．—Hi，let's go skating.
Sorry，I'm busy right now.I ________ (fill)in an application form
for a new job.
答案】ꢀam filling
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