1 I wonder ( )

1 I wonder ( )

题目
1 I wonder ( )
A how much cost these shoes
B how much these shoes cost
Chow much do these shoes
D how much are these shoes cost
2 I found ------- difficult------with him
A him,to get on
B it,getting on
C that,to get on
D it,to get on
改错
1 David is enough old to join the army
2 I won‘t wait here until he comes
请写出正确答案和相应的解释
我说的是原因啊
答案
B
D
David is old enough to join the army.
I will wait here until he comes.
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