圈出不同类的一项。
（1）bus bike robot
（2）send get train
（3）bus car plane
（4）foot car taxi
（5）ship bus car
Do you know the secret _________ good health?
| A．in | B．on | C．at | D．to |
My grandfather takes exercises ________ two hours every day.
| A．with | B．in | C．as | D．for |
________ you have a cold?
| A．Do | B．Are | C．Can | D．Should |
Did you ________ some medicine?
| A．take | B．eat | C．drink | D．have |
We should not eat ________ junk food.
| A．too many | B．too much | C．many too | D．much too |