I didn't go to the barbecue last night _
题型:选择题
问题:
I didn't go to the barbecue last night ______ I had something more important to do. [ ]
A. so
B. if
C. because
D. but
I didn't go to the barbecue last night ______ I had something more important to do. [ ]
A. so
B. if
C. because
D. but