–Do you have any plans for this Sunday?
--I’m not sure. I ______ go to the countryside to see my grandmother.
A. can B. must
C. may D. need
–Why didn’t you buy any bread?
--Sorry, I _____.
A. forget B. forgot
C. remember D. remembered
The final exam is very important. We must treat it _______.
A.serious B.seriously
C.careless D.carelessly
---- Sir, Jenny wants to know when she can leave the office.
----- Only when she ______ copying this report.
A.finishes B.finish
C.finished D.will finish
Why not your teacher for help when you can’t finish it by yourself?
A. ask; write B. to ask; writing
C. ask; writing D. asking; write
--Is that Anna's car?
--It____be hers. She has just gone to the theater for the new opera.
A.can't B.mustn't
C.may D.could
