关于从句的选择题

关于从句的选择题
11.Take a map with you,you will find your way easily.
A.and B.otherwise C.but D.for
12.Turn on the television or open magazine and you advertisements showing happy,balanced families.
A.are often seeing B.often see C.will often see D.have often seen
13.I admit that there are problems,I don't think that they cannot be solved.
A.Unless B.Until C.As D.While
14.Dress warmly,you'll catch cold.
A.on the contrary B.or rather C.or else D.in no way
15.There is plenty of rain in the south there is little in the north.
A.while B.as C.when D.so
16.several times about it,but he could not give the correct answer.
A.Being asked B.Having been asked C.He would ask D.He had been asked
17.-- I don't like chicken fish.-- I don't like chicken,I like fish very much.
A.and; and B.and; but C.or; but D.or; and
18.Li Fang is very busy,she's always helping others with their lessons.
A.but B.although C.so D.for
19.It's really very dangerous.One more step,the baby will fall into the well.
A.or B.so C.but D.and
20.She is American,she knows little about American history.
A.so B.yet C.and D.therefore