Themedicine（）cool,cleananddry. A: must keep B: must be kept C: must be keep D: must be in
Themedicine（）cool,cleananddry. A: must keep B: must be kept C: must be keep D: must be in
The flowers ( ) every day. A: must be water B: must be watered C: must watered D: must water
The flowers ( ) every day. A: must be water B: must be watered C: must watered D: must water
Such films _____ by children like you. A: must be not seen B: must not be see C: must not seen D: must not be seen
Such films _____ by children like you. A: must be not seen B: must not be see C: must not seen D: must not be seen
These books ______ good care of. A: must taken B: must take C: must to take D: must be taken
These books ______ good care of. A: must taken B: must take C: must to take D: must be taken
The medicine （） cool, clean and dry. A: must keep B: must be kept C: must be keep D: must be i
The medicine （） cool, clean and dry. A: must keep B: must be kept C: must be keep D: must be i
The flowers （） often. A: must be water B: must be watered C: must watered
The flowers （） often. A: must be water B: must be watered C: must watered
Old people () carefully. A: must be listened B: must be listened to C: must listen to
Old people () carefully. A: must be listened B: must be listened to C: must listen to
He looks tired. He ______ a sleepless night. A: must have been B: must have had C: must be D: must have
He looks tired. He ______ a sleepless night. A: must have been B: must have had C: must be D: must have
The construction of the laboratory ________ by the end of July. A: must be completing B: must complete C: must have complete D: must have been completed
The construction of the laboratory ________ by the end of July. A: must be completing B: must complete C: must have complete D: must have been completed
Your grandmother____________ to the hospital at once． A: must send B: must be sent C: must to be send
Your grandmother____________ to the hospital at once． A: must send B: must be sent C: must to be send