I am not sure if Tom____ home. If he________,  I'll call you.

A．willcome,willcome B．comes,willcome
C．will come, comes D．will come, come

C

解析試題分析：句意：我不確定Tom是否來(lái)我家。如果他來(lái)，我就給你打電話。第一個(gè)句子是由if引導(dǎo)的賓語(yǔ)從句，時(shí)態(tài)是主現(xiàn)從任意，結(jié)合句意可知要用將來(lái)時(shí)。第二個(gè)句子是由if引導(dǎo)的條件狀語(yǔ)從句，主將從現(xiàn)。故選C。
考點(diǎn)：考查從句的時(shí)態(tài)辨析。

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