C. overtake

D. overlook

-----------------选择：D

3. Before you started to ______, make sure the road is clear ahead of you; otherwise it might lead to an accident

A. overwork

B. overtake

C. overhear

D. oversee

-----------------选择：B

4. Every gift, ______, is in reality great if given with affection.

A. it may be small

B. though being small

C. small as it is

D. though may be small