—I have difficulty __________ the article.
—Remember __________ it three times at least.
| A．to understanding, reading | B．understanding, reading |
| C．understanding, to read | D．to understand, to read |
Do you have toys? I’d like to buy ______ for my cousin.
| A．it | B．one |
| C．this | D．that |
You see, Kevin is writing ______ his left hand.
| A．at | B．as |
| C．for | D．with |
We must protect plants. They are friends of ______.
| A．we | B．us |
| C．our | D．ours |
Let’s take ______ photo! Everyone, cheese!
| A．a | B．an |
| C．the | D．不填 |
—It’s too hot. Why not go swimming with us?—___________ .
| A．Good idea! | B．That’s right! |
| C．Well done! | D．Congratulations! |