—Why not paint the Golden Gate Bridge blue or other colors?
—The bridge has always been painted "International Orange" ______ that color is easier to see in the heavy fog.
| A．because | B．since |
| C．though | D．while |
I think _______ necessary for you _______ breakfast.
| A．this; have | B．that; to have | C．it’s; to have | D．it’s; have |
—There _______ a football match this evening.
—Exciting news.
| A．are going to be | B．is going to be | C．is going to have | D．will have |
We should eat _______ fruit and vegetables, but _______ meat. It is good for our health.
| A．more; less | B．more; more | C．less; more | D．less; less |
—Must we keep the room_______ all the time?
—No, you don’t have to.
| A．cleaning | B．cleaned | C．to clean | D．clean |
—He plays basketball so well! Who taught _______?
—He learnt it by _______.
| A．him; him | B．himself; himself | C．him; himself | D．himself; him |