--- What’s your question?
---I want to know _________.
| A．how can trees help us | B．how do trees help us |
| C．how trees help us | D．how can we help trees |
—We’re going to have a football match with Class 1.
—________.
| A．Thank you | B．Good luck to you | C．Not at all | D．It doesn’t matter |
—_________ I borrow your history book?
—Sure. Here you are.
| A．Must | B．May | C．Need | D．Will |
Helen and Mary are good friends. _______often help each other.
| A．Them | B．Theirs | C．They | D．Their |
Lady Gaga is ________very popular singer. She has lots of fans.
| A．a | B．an | C．the | D．/ |
I spend much more time playing basketball than I _______ for my lessons.
| A．spend to prepare | B．do preparing | C．do to prepare | D．spend prepare |