Had I mastered the statistic technique, a large amount of time and, energy .
| A．was avid | B．had been saved | C．will be save d |
D．would have been saved |
The situation forced my mother and I exchanged our roles as child and caretaker, making me grow up much faster than the _____ child.
| A．average | B．ordinary | C．common | D．usual |
It is the first time that he ______ here and now it is high time that he ______ around.
| A．come; should be shown | B．has come; was shown |
| C．came; was shown | D．has come; be shown |
The construction of the gym caused much noise, __________ it difficult for people nearby to sleep.
| A．made | B．to make | C．making | D．having made |
She won’t be able to come next week, because she _________ herself in Mount Tai then.
| A．enjoys | B．will be enjoying | C．is enjoying | D．Enjoyed |
Hearing loss in a large number of teenagers______ caused because of their listening to loud music.
| A．is | B．has | C．are | D．have |