Mr. Smith lives ____ that building. His house is ____ the
fifth floor.
| A．in; on | B．of; to | C．on; in | D．to; at |
Nobody knows ______ yesterday.
| A．how the accident happens |
| B．how does the accident happen |
| C．how the accident happened |
| D．how did the accident happen |
The park gates ______ at 10:00 every evening.
| A．lock | B．locked | C．are locked | D．were locked |
Mum told Andrew ______ quiet in the museum.
| A．keep | B．to keep | C．keeping | D．kept |
My uncle is a writer. He ______ many books since he was young.
| A．writes | B．wrote | C．is writing | D．has written |
—I wonder _______.
—By searching the Internet.
| A．how you got the information |
| B．when you got the information |
| C．how did you get the information |
| D．where did you get the information |