—What color is the T-shirt?
—It’s .
| A．an orange | B．orange |
| C．a pink | D．in green |
The students are clever. They have no problems _____ out the math problem.
| A．work | B．working | C．works | D．to work |
—Do the dishes,Tom, or I will tell Mom!
--Mind your own_____,Mary!
| A．action | B．way |
| C．business | D．duty |
I think this problem is much more difficult than that one,______?
| A．don’t I | B．do I |
| C．is it | D．isn’t it |
Mother told me sound____slower than light.
| A．traveled | B．travel |
| C．travels | D．traveling |
—I have no idea____Mary will go shopping with us or not.
–I don’t know,either.
| A．whether | B．that |
| C．when | D．how |