—How often do I need to feed the dog? —It _______food every day，or it will be hungry．
A: A．must give
B: B．must be give
C: C．must be given
D: D．must be gave
A: A．must give
B: B．must be give
C: C．must be given
D: D．must be gave
举一反三
- Must I ____ Mrs. Jones these books? A: give B: to give C: giving D: gave
- I told Jim how to get here but perhaps I ______ him the map. A: had to give B: must have given C: ought to give D: should have given
- The flowers are dead. I _ ___ more water A: will give B: should have given C: must give D: would have given
- The flowers are dead. I （） them more water. A: would have given B: will give C: should have given D: must give
- - ____ I tell her the truth?- Yes, you ____. A: Need; need B: Need; must C: Must; mustn't D: Must; needn't