Wewillhavenowatertodrinkwedont

We will have no water to drink ________ we don't protect the earth.

A．until

B．before

C．though

D．if

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相关试题

I don’t know if it _________ tomorrow. We won’t go shopping if it ____________.

A．will rain; rains	B．rains; will rain
C．will rain; will rain	D．rains; rains

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Now lots of teenagers spend a lot of time playing computer games.
Yes. Teachers and their parents should prevent them _________ too much.

A．to play

B．play

C．plays

D．playing

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“ He often offers the children in need some help ” The sentence structure is _______

A．S＋V+O	B．S＋V＋P
C．S＋V＋O＋OC	D．S＋V＋IO+DO

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We often heard Peter and his friends _________ in his room last term.

A．sing

B．to sing

C．sings

D．singing

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He often does everything ______. No one knows what he plans ______.

A．himself, to do	B．himself, do
C．herself, to do	D．herself, do

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