Do remember to be ________. We must avoid any possible risks when doing this dangerous chemical experiment—burns, poisonous gases or cuts from broken tubes.
#18808
A
cautious
B
thoughtful
C
considerate
D
curious
推荐题目
—Do you think our teacher is ________ ?—Yes, he always corrects our homework and prepares his lessons _______.
#19908
A
careful; careful
B
careful; carefully
C
carefully; carefully
D
carefully; careful
I think he’s just going to deal with this problem ____day.
#20938
A
next
B
other
C
following
D
another
 _________several times, but Mary still has no idea of how to do it properly. 
#19683
A
Being shown
B
Having shown
C
Having been shown
D
I’ve shown her