Mr. Black must be worried about something. You can ____ it from the look on his face.
| A．reason | B．recognize | C．read | D．realize |
He is writing a novel, so he shuts himself up, ________ to receive guests.
| A．refuses | B．to refuse | C．refusing | D．refused |
Mr. Black is very happy because the clothes made in his factory have never been _________.
| A．popular | B．more popular | C．most popular | D．the most popular |
The Hengxin Square is located in ____________ used to be our canteen.
| A．what | B．where | C．which | D．the place |
Helping others is a habit, ________ you can learn even at an early age.
| A．it | B．that | C．what | D．one |
My grandmother always said you should sweat to reduce the when you have the flu.
| A．medicine | B．illness | C．fever | D．pressure |