Chọn đáp án đúng :
1 , The new models are expensive , =-.. efficient .
a , however b , therefore c , and d , but
2 , He failed his examination . =-- ; she will have to do the examination again .
a , however b , but c , therefore d , because
3 , Students have to carry =. their duties .
a , out b , in c , for d , over
4 , He ate the chocolate cake =-. he is so fat .
a , in spite of b , because c , despite d , even though
5 , She attended the class --... she didn't feel alert .
a , because b , although c , so d , and
6 , Classes will be canceled tomorrow =-.. it is a national holiday .
a , therefore b , because c , but d , because of
7 , =-.. her mother's sickness , she couldn't attend our wedding .
a , as of b , because of c , because d , since
8 , It can be black , white =. gray .
a , or b , however c , but d , so
9 , Is it a boy = a girl ?
a , and b , but c , or d , therefore
10 , Internet is a very fast =... convenient way for us to get information .
a , and b , therefore c , or d , but
11 , He is going to collect all the bags --... take them to the garbage dump .
a , or b , and c , however d , but
12 , He likes her a lot . =-. he wouldn't keep calling her .
a , and b , however c , or d , so
