问题
The argument remains extremely heatedit is necessary to frequently update teaching material.
A:that
B:which
C:if
D:whether
B:which
C:if
D:whether
正确答案是：
同类题型
Under no circumstances in the last three months______ for leave because of personal affairs．
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I’m not familiar with this placeIt’s the first time I _____ here, you know
He can speak English，German，French and Japanese.He isnearly a man with a________for languages.
Would you like some more noodles— . I like noodles very much.