______ that I was in trouble, Tom came to my aid without delay.
| A．Learn | B．Learning | C．Learned | D．To learn |
Liu Yang became the first woman astronaut in China _____into space. ( )
| A．ravel | B．travelled |
| C．to travel | D． being travelled |
-What's the matter?
-The cook _____five minutes ago, and there are fifty dinners still to cook.( )
| A．left | B．leaves |
| C．has left | D．was leaving |
Most of us_________more than one thousand English words before we came to this school. ( )
| A．would learn | B．will learn |
| C．have learned | D．had learned |
Nankai University,_______ in 1919, has a history of more than 94 years. ( )
| A．found | B．founding |
| C．founded | D．to be founded |
Our English teacher spoke very clearly ________we could hear every word. ( )
| A．so that | B．now that | C．as soon as | D．in case |