It’s necessary for you (_____) the classroom clean.
A: keep
B: keeping
C: to keep
D: kept
A: keep
B: keeping
C: to keep
D: kept
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
- Her job is ______ the garden clean. A: keep B: kept C: keeps D: keeping
- ________clean and tidy, the old garden still looks very beautiful. A: Keep B: To keep C: Keeping D: Kept
- ________ one’s word is very important for the human beings. A: keep B: keeping C: to keep D: kept