问题详情:
---Why! I couldn’t get you on the phone this morning.
---We ____tennis in the yard when you phoned me.
A. could be playing B. must be playing C. must have been playing D. should have played
【回答】
C
知识点:虚拟语气与情态动词
题型:选择题
问题详情:
---Why! I couldn’t get you on the phone this morning.
---We ____tennis in the yard when you phoned me.
A. could be playing B. must be playing C. must have been playing D. should have played
【回答】
C
知识点:虚拟语气与情态动词
题型:选择题