Question

________ before we depart the day after tomorrow, we should have a wonderful dinner party.

________ before we depart the day after tomorrow, we should have a wonderful dinner party.

A) Had they arrived

B) Would they arrive

C) Were they arriving

D) Were they to arrive

Answer 1

A
省略句型加虚拟语气。虚拟是将have后退一个时态，变成had,
if省略,主谓要倒装
原型是if
they
had
arrived
before……
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以后看到这种题，就大胆的填上had打头的选项，啥都不用想！我做了这么多年题，高考到四六级，还从没发现不是这个套路的！

Answer 2

应该选 D 关于将来的假设
will 表示突发情况。be to 表示有计划的。而根据句意应该是早就计划好的了。

Answer 3

c 对将来的虚拟

Answer 4

A,虚拟语气

Answer 5

B