[单选题]5. The number of the students in our class_______45.
正确答案 :B
is
解析:5.B【解析】the number of…意为“……的数目、数量”,后接复数名词,但谓语要用单数形式。
[单选题]下列物质中,不能在氧气中燃烧的是( )
正确答案 :A
金箔
[单选题]3. —Tony,your bag is still on your desk.—Oh,thank you. I have forgotten _________ it there.
正确答案 :D
putting
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