33．It was the first time that Mike______the piano at the concert hall and he hoped that his nervousness would go ．
| A．played；unnoticed | B．had played；unnoticed |
| C．played；unnoticing | D．had played；unnoticing |
The day breaks, _______ the birds are singing.
| A．for | B．because | C．since | D．As soon as |
________, I attended the meeting instead of him last week.
| A．He was ill | B．His being ill |
| C．He being ill | D．Him being ill |
When you read the book, you’d better make a mark ______ you have questions.
| A．at which | B．at where | C．the place where | D．where |
I didn’t see your sister at the cinema. If she ______, she would have met my brother.
| A．has come | B．did come | C．came | D．had come |
____ all behavior is learned behavior is a basic assumption of social scientists.
| A．Nearly | B．That nearly | C．It is nearly | D．When nearly |