Mr.Smith, together with his two sons,_____Shanghai for about five months.
| A．has left | B．has been away from | C．have left | D．have been away from |
— Air quality in our city is becoming worse and worse.
—Yes. These days' PM2.5 readings are frightening. We must do something to ______air pollution.
| A．reduce | B．remove | C．collect | D．gather |
---Do you like tea or coffee?
--- coffee. I prefer coffee ______ milk.
| A．to | B．with | C．of | D．in |
What _____ good time we had________ a picnic yesterday!
| A．a;had | B．\; having | C．a; having | D．\; had |
—How did you find your visit to Qingdao, Joanna?
— _________.
| A．Oh, wonderful indeed | B．I went there alone |
| C．First by train and then by ship | D．A guide showed me the way |