______tomorrow, we should be very glad.A、They arriveB、Were they arrivingC、They

游客2024-01-20  65

问题 ______tomorrow, we should be very glad.

选项 A、They arrive
B、Were they arriving
C、They were to arrive
D、Were they to arrive

答案 D

解析 本句考查的是虚拟语气。
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