Because there are so few high mountains in Britain, the ______ of British people don't know how

A.so

B. still

C. because

D. though

A.that

B.so that

C.so

D.therefore

Was it because he was ill ______ he asked for leave？

A) and B) that C) that's D) so

A.Because;so

B.Though;but

C./;so

D./;but

A.because; that

B.because of; that

C.because of; so

D.because; so

A.so

B.so that

C.that

D./

A.as

B. because

C. while

D. so

A.that

B.so that

C.so

D.when

A. when

B.if

C.because

D.so

A.in that

B.just as

C.so that

D.because of