_____ some of this juice — perhaps you will like it.
| A．Try | B．Trying |
| C．To try | D．To have tried |
If you are traveling ________ the customs are really foreign to your own，please do as the Romans do.
| A．in which | B．what | C．when | D．where |
In peace，too，the Red Cross is expected to send help ________ there is human suffering.
| A．whoever | B．however | C．whatever | D．wherever |
Oh，I'm not feeling well in the stomach.I ________ so much fried chicken just now.
| A．shouldn't eat | B．mustn't have eaten |
| C．shouldn't have eaten | D．mustn't eaten |
He hesitated for a moment before kicking the ball，otherwise he ________ a goal.
| A．had scored | B．scored |
| C．would score | D．would have scored |
My sister met him at the Grand Theatre yesterday afternoon，so he ________ your lecture.
| A．couldn't have attended | B．needn't have attended |
| C．mustn't have attended | D．shouldn't have attended |