John bought the car at $ 7,000 which is a low price and I doubt whether there has been a ________ price since then.
| A．low | B．lower | C．more low | D．lowest |
The first time I saw her, Mary was standing still in the wind, her long hair _____in the air.
| A．is flying | B．flying | C．to fly | D．flew |
Sometimes he found _______very hard to fall asleep at night, so he went to see the doctor．
| A．him | B．this | C．that | D．it |
—What’s that noise? Is the water still running?
—Oh, my god! I ________to turn it off after I brushed my teeth．
| A．was forgetting | B．forgot | C．had forgotten | D．am forgetting |
Criticism is highly necessary ____it helps to monitor the progress of our work．
| A．in which | B．for which | C．so that | D．in that |
In 1720,Bach’s wife suddenly died, ______him with four children．
| A．leaving | B．to leave | C．left | D．had left |