You have failed two tests.You’d better start working harder,_______ you won’t pass the course.

A.and                           B.so                             C.but                           D.or

You have failed two tests. You’d better start working harder, ____you won’t pass the course.

A．a(chǎn)nd   B． so   C． but      D. or

You have failed two tests. You’d better start working harder, ____ you won’t pass the course.

 You have failed two tests.You’d better start working harder,_______ you won’t pass the course.

A.and               B.so                    C.but               D.or

You have failed two tests. You’d better start working harder,____ you won’t pass the course.

A. and　　　　 B. so　　　　　 C. but　　　　 D. or

You have failed two tests. You'd better start working harder, ________ you won't pass the course.

1. A.
   and
2. B.
   so
3. C.
   but
4. D.
   or

You have failed two tests. You’d better start working harder, ____ you won’t pass the course.

   A. and              B. or               C. but             D. so

You have failed two tests. You’d better start working harder, ____you won’t pass the course.

A. and   B. so   C. but      D. or