问题

1The Internet is really______ to us. We can easily find the information we need.
A: safe
B:hard
C:boring
D:useful
B:hard
C:boring
D:useful
正确答案是:
同类题型
________ you are unwilling to study abroad, why not start a small business with me after graduation
My students are all quiet.Even after class, my students spend ___as they can playing outside.
The prize of the game show is $30,000 and an all expenses_______ vacation to China.