Mountaineers _______ climb Mount Everest must make reservations to do ...

[ TOEFL ]

Mountaineers _______ climb Mount Everest must make reservations to do so, often up to seven years in advance.

A. want to

B. they want to

C. who want

D. wanting to

Select your answer:

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A. will fly

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C. are flying

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I _______ meet you again.

A. will

B. shall

C. is going to

D. are going to