We will have no water to drink _________ we don’t protect the earth.
A. until                    B. if                       C. unless
B

試題分析：A. until直到，B. if如果，C. unless除非，句意：如果我們不保護(hù)地球，我們將沒(méi)有水喝。if引導(dǎo)的條件狀語(yǔ)從句用一般現(xiàn)在時(shí)，主句用一般將來(lái)時(shí)。故選B。
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：初中英語(yǔ) 來(lái)源：不詳 題型：單選題

Could you tell me                          ?
A．who you are waiting forB．who were you waiting for
C．what was happenedD．how to do

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：單選題

He prefers _______ books at home rather than _______ to a party.
A．reading; goB．reading; goingC．to read; goD．to read; to go

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：單選題

If he ___________ on time, we will go without him.
A．doesn’t come
B．don’t come
C．didn’t come
D．comes

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：單選題

-- Hello, this is Jack. May I speak to Tom?
-- Sorry, he isn’t in at the moment. If he _______ back, I’ll ask him to call you back.
A．comeB．comes
C．have comeD．came

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：單選題

I am waiting for my friend.        , I will go swimming alone.
A．If he doesn’t comeB．If he won’t come
C．If he hasn’t comeD．If he isn’t coming

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：單選題

It _____ ten years since they _____ to France.
A．was; movedB．was; have movedC．is; have movedD．is; moved

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：單選題

—Would you like _________ Shijing Hill with us next Sunday afternoon?
—I will go with you unless my mother _________me．
A．climbing ; refusesB．climbing ; will refuse
C．to climb ; refusesD．to climb ; will refuse

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：單選題

If I        you, I           the army.
A．a(chǎn)m, would joinB．were, would joinC．a(chǎn)m, will joinD．were, will join

查看答案和解析>>

同步練習(xí)冊(cè)答案