To my surprise, he was lost in thought then and not ____ of my presence at all.
| A．certain | B．fond | C．sensitive | D．aware |
After ________seemed an endless wait, it was his turn to enter the personnel manager's office.
| A．that | B．it | C．what | D．there |
Hardly ______ when I regretted saying it.
| A．had the word come out | B．did the word come out |
| C．the word had come out | D．the word came out |
As is reported, it is 115 years______Peking University was founded.
| A．when | B．before | C．after | D．since |
_____ its role in social education, the Palace Museum is quitting its admission fee for special groups on certain
dates.
| A．Fulfill | B．Having fulfilled |
| C．To fulfill | D．Fulfilled |
--- How messy it is! Kevin, can I come in?
--- Oh, I'm so sorry. The house____.
| A．is being cleaned | B．has been cleaned |
| C．is cleaning | D．was cleaned |