In autumn, _________ the weather is often cool and fine, people living in the city always like climbing hills for outdoor activities to strengthen their health．
| A．which | B．where | C．as | D．when |
—— Do you still remember the day when we went to the Great Wall?
—— I can’t remember it well, but＿＿＿＿＿＿sometime last autumn?
| A．might it be | B．could it have been | C．could it be | D．must it have been |
It’s strange that they＿＿＿＿＿nothing about this matter.
| A．know | B．would know | C．knows | D．knew |
I wish you＿＿＿＿＿＿go with me tomorrow.
| A．will | B．would | C．shall | D．can |
—— Could I use your telephone?
—— Yes, of course you ＿＿＿＿＿＿＿＿＿＿＿＿＿.
| A．could | B．will | C．can | D．might |
It’s high time we＿＿＿＿＿＿＿ to the theater.
| A．will | B．shall | C．are going to | D．went |