B.How many times
Only once只一次.
自然是问:去过多少次?
A.How often 是问频度的,多久去一次._____you be able to work out this Maths problem by yourself? A.Will B.Are C.Can D.Could选什么A你能独立做出...吗? be able to用了原形,已经有BE了.所以B不对.can =be able toC和D不对.
__________has he been to the pyramids in Egypt? Only once A.How often B.How many times
__________has he been to the pyramids in Egypt? Only once A.How often B.How many times
英语人气：832 ℃时间：2019-08-21 19:59:35
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