问题描述：
语法
1.--Do you have any idea when the experiment was carried out?
--I hear it was not until last year ( B ) their plan was approved.
A.that B.when C.before D.once
2.Jeans,as is known,is a kind of cloth that ( D ) well,as a result of which it ( D ) well.
A.is worn;is sold B.wears;is sold
C.is worn;sells D.wears;sells
3.We are living in a period ( C )many things are done easily.
A.that B.which C.when D.where
4.Right there on the table ( A ),which was rather inviting.
A.lay the food of a large variety
B.did the food of a large variety lie
C.the food of a large variety lay
D.the food of a alrge variety was lying
1.--Do you have any idea when the experiment was carried out?
--I hear it was not until last year ( B ) their plan was approved.
A.that B.when C.before D.once
2.Jeans,as is known,is a kind of cloth that ( D ) well,as a result of which it ( D ) well.
A.is worn;is sold B.wears;is sold
C.is worn;sells D.wears;sells
3.We are living in a period ( C )many things are done easily.
A.that B.which C.when D.where
4.Right there on the table ( A ),which was rather inviting.
A.lay the food of a large variety
B.did the food of a large variety lie
C.the food of a large variety lay
D.the food of a alrge variety was lying
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