4.It is well worth _______to learn how to drive a car.
问题描述：
4.It is well worth _______to learn how to drive a car.
A.making the effort
B.making effort
C.to make the effort
D.to make an effort
答
be worth doing sth.
make effort词组 所以选B
注意区别:be worthy of being done
be worthy to be done