Go __ and you’ll see her working at the desk.
| A．to upstairs | B．upstair | C．to upstair | D．upstairs |
20．It was four o'clock in the afternoon_____he and his grandpa reached the museum in Guanghan, _____an official warmly received them.
| A．that; where | B．when; that | C．when; where | D．that; when |
19．－The book by Tony Garrison is of great use to our course.
－But I think this one is_______worth reading.
| A．more | B．most | C．better | D．Best |
18．In this experiment, they are woken up several times during the night, and asked to report what they _______.
| A．are dreaming | B．had dreamt |
| C．had been dreaming | D．have been dreaming |
17．－I didn't pass the English exam.
－Work hard, _______you'll succeed.
| A．and | B．but | C．or | D．So |
16．In no place of China_______little about the economic development nowadays.
| A．the local government cares | B．does the local government care |
| C．doesn't the local government care | D．cares the local government |