.---John, how did your English exam go?
---I thought I ____, but in fact I came in the top 10% in the class.
| A．should have failed | B．couldn’ t have failed |
| C．might have failed | D．mustn’ t have failed |
She knows so much about England. She ________ there before. 
| A．must be | B．must have been | C．must live | D．must have lived in |
—How do you like your new neighbour?
—She is _________, but her appearance is a bit_________. 
| A．interesting; disappointed | B．interested; disappointed |
C．interesting; disappointing | D．interested; disappointing |
I thi
nk David, _______ you, ______ to blame.
| A．rather than; is | B．rather; are | C．more than; are | D．less than; is |
Someone is ringing the doorbell. Go and see _______.
| A．Who is he | B．who he is | C．Who is it | D．who it is |
. One advantage of playing the guitar is _____ it can give you a great deal of pleasure.
| A．how | B．why | C．that | D．when |