1.It was not until December 31 __________ we heard from him.

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1.It was not until December 31 __________ we heard from him.
A.which B.when C.that D.then
2.At one time we had about eighty people here who did nothing but __________into various family history.
A.researched B.research C.researching D.to research
3.— How __________ will you be able to come back from you travel?
— In a couple of weeks,perhaps.
A.fast B.long C.often
4.Your hair needs __________.You’d better have it done tomorrow.
A.cut B.cutting C.to cut D.being cut
D.soon
5.When __________ to dinner at the White Rose Restaurant,he seemed very happy and accepted the invitation.
A.invited B.inviting C.to be invited D.having invited

1强调句.it was that
2nothing but do sth
3根据下面的回答可以知道对方是问去多久,所以要用How long ,How often是问多经常.一般回答是每隔多久才去一次How fast是问速度的
4 cut 可表被动态,need to be done /need doing 表被动你的头发需要把被怎样~故选B便可
5还原句子是When he having invited to dinner at the White Rose Restaurant,he seemed very happy and accepted the invitation.
主语是he所以是正在被邀请故选having invited 便可

1.It was not until December 31 __________ we heard from him. 英语翻译1.It was very percefui in the cool grass——until we heard not ...until it was not until Not until It was not long until ... it was not until和it was until it was not until和 it was until的区别 we have not heard from them____last month It was not until he came back from Africa that year that he It was not until he come back from African that year that he 英语翻译It was not until some years after he graduated from coll ____Beijing,his mother has not heard from him 9.It was not until dark ________ ...