题目内容

I won’t call you, ________ something unexpected happens.

A. unless
B. whether
C. because
D. while

查看答案
更多问题

_______ he had not hurt his leg, John would have won the race.

A. If
B. Since
C. Though
D. When

Small sailboats can easily turn over in the water ______ they are not managed carefully.

A. though
B. before
C. until
D. if

The field research will take Joan and Paul about five months; it will be a long time _____ we meet them again.

A. after
B. before
C. since
D. when

Leave your key with a neighbor ___ you lock yourself out one day.

A. ever since
B. even if
C. soon after
D. in case

答案查题题库