Whenever it is, it is right for a student to ______ the school disciplines．
#74415
A
see
B
watch
C
notice
D
observe
推荐题目
There are a lot of computers in the lab,and they need professional __________ to make sure they can be in a good state.
#82302
A
operation
B
maintenance
C
service
D
advice
Hundreds of species are declared to _____ in the coming century.
#76119
A
die away
B
die out
C
die down
D
die off
You have to speak slowly in order to ____.
#81015
A
make you understood
B
make youself understood
C
make them understand
D
make themselves understand