__ carefully if any change occurs when doing experiments in the lab..
#88398
A
Observe
B
To observe
C
Observed
D
Observing
推荐题目
Most of us manage our physical health better than our emotional health, ______ problems to cause real harm.
#91435
A
left
B
leaving
C
to leave
D
having left
Mr. Smith stood up in defence of the 16-year-old boy, saying that he was not the person ____.
#95706
A
blamed
B
blaming
C
to be blamed
D
to blame
It’s important for the figures regularly.
#95967
A
to be updated
B
to have been updated
C
to update
D
to have uodated
--The first one ________ the finishing line wins the gold medal.--True!
#91627
A
reaches
B
reached
C
to reach
D
reaching