A new baby came to the earth ______ a sunny winter morning. How nice.
| A．in | B．on | C．of | D．at |
The man said that he was ________ to buy this expensive house.
| A．too rich | B．so rich |
| C．rich enough | D．quite rich |
It is very kind ____ you to help me with these maths problems because it is very difficult ____ me to work them out.
| A．of; for | B．of; of |
| C．for; of | D．for; for |
One of the suspects is ____ schoolboy.
| A．an 18-year- old | B．an 18-years-old |
| C．a 18 years old | D．a 18-year-old |
— We plan to go out for a picnic next weekend. Would you like to come along?
— ______. It’s my favorite.
| A．Enjoy yourself | B．It doesn’t matter |
| C．You’re welcome | D．That would be very nice |
Food safety is important. Rules ______ to stop people from food pollution.
| A．must make | B．must be made |
| C．can’t make | D．can’t be made |