--Sam, come downstairs, please. I need your help.
--Sorry, Mum. I _____ on the phone.
A.talked B. am talking C.was talking.
All of us ______ very happy if you can come with us.
| A．will be | B．are | C．be | D．were |
— Hi, Nancy. Shall we go to France for the long holiday?
— Sorry, Kate and I ______ there twice.
| A．be | B．were |
| C．have been | D．will be |
He ______ TV when I called him last night.
| A．watches | B．watched |
| C．will watch | D．was watching |
We are sure one day the air in Beijing will be much ______ than today.
| A．clean | B．cleaner |
| C．cleanest | D．the cleanest |
What a nice day! We decide ______ out for a picnic.
| A．go | B．going | C．went | D．to go |