Our room must________clean.
A: keep
B: be kept
C: to be kept
D: to keep
A: keep
B: be kept
C: to be kept
D: to keep
举一反三
- Our room must ( ) clean. A: to keep B: be keeping C: be kept D: keep
- The classroom must ______. A: be kept clean B: keep cleaned C: kept clean
- The medicine （） cool, clean and dry. A: must keep B: must be kept C: must be keep D: must be i
- Food ___in a cool place in summer. A: must keep B: mustn't keep C: must be kept D: mustn't be kept
- Themedicine（）cool,cleananddry. A: must keep B: must be kept C: must be keep D: must be in