D) an opera requires a huge orchestra as well as a large choir
E) opera doesn't have any properties in common with musical theater
4. You .............. another job pretty soon. I have a feeling that you're going to get fired before long.
A) would have started to look for
B) had better to start looking for
C) would start looking for
D) 'd better to start to look for
5. ..............., he went to collect his payment.
B) Although he had completed his work successfully
C) Despite the fact that the work was successfully completed
D) As long as the work is completed with success
E) The work have been completed
6. I was under the impression that you, too, .............. along with us. I am sorry that you aren't.