He doesn’t know ________ they will plant trees on Saturday or not.
| A．if | B．whether |
| C．where | D．how |
It ________ me about 10 minutes to walk there.
| A．pays | B．costs | C．takes | D．spends |
I often heard Tom _________ the violin in the next room.
| A．play | B．plays |
| C．played | D．to playing |
The student didn’t find much ________ about the accident on the website.
| A．report | B．article |
| C．information | D．story |
—Who is that woman?
—Liu Yang. She’s ________ astronaut. We are proud of her.
| A．a | B．/ | C．an | D．the |