问题
It is a long time ______ I saw you last． —Yes．And it willbe a long time ______ we see each other again．
A:when; before
B:after; when
C:since; before
D:since; until
B:after; when
C:since; before
D:since; until
正确答案是：
同类题型
________ it is to go for a picnic on such a fine day!
In my opinion, life in the twenty-first century is much easier than _______
They don’t feel safe in our town at night because it so dangerousThere’s a robbery every week now
is known to us is thother harmful products, so you should give up smoking.