44．A．while B．since C．until D．as——青夏教育精英家教网——

摘要：44．A．while B．since C．until D．as

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I’ll go to visit my aunt in England _____ the summer holidays start..

A．while B．since. C．until D．as soon as

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I tried to call you ________ I heard from him, but you were not in.

[　　]

A．since

B．while

C．until

D．as soon as

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I tried to call you ________ I heard from him, but you were not in.

[　　]

A．since

B．while

C．until

D．as soon as

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________ my parents were watching TV, I was playing a new computer game．

Since

While

Until

As

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I tried to call you ________ I heard from him, but you were not in．

since

while

until

as soon as

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