It's dangerous to let the children who are _____ go swimming in the river. 
#94757
A
too young to
B
so young
C
not old enough to
D
so old
推荐题目
How many years is it ______ your family moved here?
#94690
A
after
B
since
C
before
D
until
It will be three days __________he ________back from his home town..
#92345
A
when; will come
B
after; will come
C
since; comes
D
before; comes