The girl looked at me with a _______expression. Maybe the problem was quite ________.
| A．puzzled; puzzling | B．puzzling; puzzled |
| C．puzzled; puzzled | D．puzzling; puzzling |
—Please don't tell anybody.
—I ________. I promise.
| A．can't | B．don't |
| C．won't | D．mustn't |
—Nowadays children have more freedom.
—I agree. They ________ do what they like.
| A．need | B．must |
| C．should | D．can |
After walking on the zigzag path to the mountain top for a few hours, the tourists gathered under trees ________ shade and ________ down to have a rest.
| A．provided; sit | B．providing; sitting |
| C．providing; sat | D．provided; sat |
The fireman told us the troubles they had ________ the fire ________.
| A．getting; controlled | B．got; controlled |
| C．got; controlled | D．getting; to control |
Please hand on the papers to those ________ at the back of the classroom.
| A．seating | B．sat |
| C．seated | D．sit |