{01}—You can"t imagine ________ fantastic fun online chatting is. —Really?But it may cause a lot of trouble sometimes.
A.what
B.how
C.why
D.so
解析:imagine后接了一个由what引导的宾语从句,该宾语从句是一个“what+adj.+不可数名词+主+谓”结构的感叹句,故A正确。 本题选A。 {02}_____there are many different types of food, some animals spend their lives eating only one type.
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