问题

Excuse me, could you help me take this chair to myoffice—I’m sorry, ______ I can’t help you right now. I’m toobusy.

A:and
B:but
C:so
D:because

正确答案是：

同类题型

ung lady, ________ several attempts to fix her cell phone, decided to have another try.

－Would you like some more tea?－___________, please

Mom, can I go out and play with my friends now?—No, honey, you can’t _____ you haven’t recovered from the knee injury

_________ the people lost their lives in thetraffic accident.

It is already well understood___________ causes the global warming.