He was seriously ill. That’s _______ he didn’t appear at the party.
| A．because | B．what | C．why | D．when |
Parents ____ bring up their children under 16 and educate them properly.
| A．could | B．may | C．might | D．ought to |
All of us found _____ necessary to learn a foreign language.
| A．this | B．that | C．it | D．what |
I used to _____ bed at nine. Now I am used to ____ bed at ten.
| A．go, going | B．go to, going to | C．go to, go to | D．going to, going to |
The life of Milu ____ at present.
| A．is been studied | B．is being studied | C．was being studied | D．have been studied |
_________ is known to all, he is good at Eng
lish.
| A．Which | B．As | C．It | D．What |