-- 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
B

試題分析:句意:你好,我是杰克,我能和湯姆通話嗎?- 對(duì)不起,他現(xiàn)在不在。如果他回來(lái)了我讓他給你回電話。在if引導(dǎo)的條件狀語(yǔ)從句中,如果兩個(gè)動(dòng)作都沒(méi)有發(fā)生,為了區(qū)別動(dòng)作的前后關(guān)系,先發(fā)生的用一般現(xiàn)在時(shí)態(tài),后發(fā)生的用一般將來(lái)時(shí)態(tài),即主將從現(xiàn)。故選B。
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