谁有跟英语从句有关的题啊?

谁有跟英语从句有关的题啊?

1.In time of serious accidents,____ we know some basic things about first aid,we can save lives.
A.whether B.until　　 C.if D.unless
　　2."You can't have this football back_______ you promise not to kick it at my cat again," the old man said firmly.
　　A.because B.since C.when D.until
　　3.-Where's that report?
　　-I brought it to you ____you were in Mr.Black's office yesterday.
　　A.if B.when C.because D.before
　　4.Leave your key with a neighbor ____you lock yourself out one day.
　　A.ever since B.even if C.soon after D.in case
　　5.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
　　6.All of the flowers now raised here have developed from those ___in the forest.
　　A.once they grew B.they grew once
　　C.that once grew D.once grew
　　7.These houses are sold at such a low price _______ people expected.
　　A.like B.as C.that D.which
　　8.Is this the reason ____ at the meeting for his carelessness in his work
　　A.he explained B.what he explained
　　C how he explained D.why he explained
　　9.Along with the letter was his promise _______ he would visit me this coming Christmas.
　　A.which B.that C.what D.whether
　　10.Doris' success lies in the fact ___ she is co-operative and eager to learn from others.
　　A.which B.that C.when D.why
　　1--5CDBDB 6-10CBABB