Question

All you need___to work harder after the exam.两道选择题

（ ）All you need___to work harder after the exam.
A are B. is C.were D. to be
( )---When did they arrive?
----They____two hours ago.They______hre for two hours
A.arrives;have arrived B.arrived;have been C.got;have been D.reached;have reached
还有几道根据时态填空
1. A lot of work needs________(do)now.
2.The boy is often seen_______(play)football on the playground.
请帮下忙，最好能分析解释一下，谢谢……

Answer 1

B all作主语时，常常作单数理解。
B 后面是延续性动词
doing 主动表示被动
to play seen用于被动时，后面的不定式作宾补必须带to.
还可以填playing，表示正在进行。
很高兴为你解答！
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Answer 2

B
B
doing/ to be done
to play

Answer 3

B
B
doing
playing