初级英语,

初级英语,
51.A:“ Has your friend Sarah failed her driving test again ”
B:“ Poor Sarah She can’t seem to pass,_____ hard she tries.”
52.A:“ Could I borrow your car,please ”
B:“ All right,as _____ as you promise to drive carefully.”
53.A:“ Mr Brown,why has your company been so slow to act ”
B:“ _____ we known of the problem earlier,we would have acted sooner.”
54.A:“ Did you hear that ”
B:“ No,I didn’t catch exactly _____ they said.”
55.A:“ Do you think that I’ll be able to put the furniture together ”
B:“ _____ that you follow the instructions,I’m sure you will.”