I hear Mr. Smith was writing a story last year and he still ____.
| A．do | B．does | C．is | D．am |
The coffee is wonderful ! It doesn’t taste like anything I _______ before .
| A．was having | B．have | C．have ever had | D．had ever had |
The chairman thought _______ necessary to invite Professor Smith to speak at the meeting .
| A．that | B．it | C．this | D．him |
------Flight 302 to London_______ until 7:30 tomorrow morning.
-----No wonder I hear so many complaints from the passengers.
| A．has been delayed | B．delay | C．delayed | D．will be delayed |