You never know how much difficulty we had ______the problem. Luckily, we managed to solve it with Mrs Wu’s help.
| A．working out | B．work out |
| C．worked out | D．to work out |
下列图片中表示“停车场”的是______。
This is ______ orange. ______ orange is good.
A. an; The B. the; An C. an; A
—Thank you.
—______
| A．No,thanks! | B．Yes,thanks. |
| C．That’s right. | D．Not at all. |
Bob is ______ friend. ______ is a good boy.
| A．my; His | B．my; He |
| C．I; His | D．I; He |
—Is this your brother?[—______.
| A．Yes, it isn’t. | B．Yes, he is |
| C．No, it isn’t | D．No, he isn’t |