The professor ________at 8 o’clock，but he has not shown up yet，which worries all of us.
| A．was supposed to arrive | B．must have arrived |
| C．might have arrived | D．was supposed arriving |
Jiangsu Province ____ a series of activities to protect water resources over the past few months. Early this year, several cities ___ citizens to use new types of toilet equipment.
| A．organised; called for | B．has organised; called for |
| C．organised; has called for | D．has organised; has called for |
______up the recovery process, the government declared a public health emergency in the Gulf Coast areas hit by the hurricane.
| A．To speed | B．Speeding | C．Speed | D．Having sped |
If you let me make a choice ______ Jane and Anne, I would say Jane is______one to be my assistant.
| A．between; the best | B．from; the best | C．between; the better | D．from; the better |
--What did the professor ask us to do just now?
--Sorry, I ______ about my trip to the Wolf Hill at the weekend.
| A．had thought | B．was thinking | C．thought | D．think |
One Sunday several former classmates gathered at Tom’s for lunch, ______ their high schoolreunion the year before.
| A．talking about | B．having talked about | C．to talk about | D．talked about |