32．He met many problems he was going over his lessons． A．before B．while C．since D．a(chǎn)s soon as 【查看更多】

 

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He met many problems _______ he was going over his lessons．

A．before       B．a(chǎn)s soon as          C．since         D．while

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He met many problems         he was going over his lessons．

A．before         B．while           C．since            D．a(chǎn)s soon as

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He met many problems ______ he was going over his lessons．

　　A．before　　 B．a(chǎn)s soon as　　 C．since　　　　 D．while

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He met many problems ________ he was going over his lessons．

[　　]

A．before

B．as soon as

C．since

D．while

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He met many problems ________ he was going over his lessons．

[　　]
A．

before

B．

as soon as

C．

since

D．

while

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