In the past the children were made ______15 hours a day.
| A．to lock | B．work | C．to work | D．lock |
We are happy ______ our success.
| A．because of | B．because | C．so | D．such |
Most students have ______ homework to do every day.
| A．too many | B．too much |
| C．much too | D．many too |
Now telephones are very popular and they are much ______ than before.
| A．cheap | B．cheaper |
| C．cheapest | D．the cheapest |
– How much does it cost?
– Four ______ yuan.
| A．million | B．millions |
| C．millions of | D．million of |
Ricky was ill yesterday, ______ he had to stay at home.
| A．because | B．but | C．or | D．so |