题目内容

The existence of an email address is a signal to the consumer _________ the trader is easy to reach if it should be necessary.

A. where
B. who
C. which
D. that

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He can come with us, _________ he pays for his own meals.

A. provides
B. provided
C. provide
D. which provide

There are separate questions _________ these technologies are ready for such a wide-scale deployment.

A. as to whether
B. as whether
C. how to whether
D. whether

The consumer not only lacks for nothing, _________ is paying down debt or building up personal savings.

A. also but
B. but also
C. as well
D. well as

They regularly charge $29 per month but, when you land on their page for the first time, you see a coupon code for a free week _________ in one hour.

A. to expire
B. that expires
C. expires
D. expiring

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