I’ll go to your party___ you promise me that you will invite our class advisor.
| A．if only | B．only if | C．unless | D．since |
My neighbor asked me to go for ______ walk, but I don’t think I’ve got ______ energy.
| A．a; 不填 | B．the; the | C．不填；the | D．a; the |
We first met on a train in 2000. We both felt immediately that we ______ each other for years.
| A．knew | B．have known | C．have known | D．know |
Peter ______ be really difficult at times even though he’s a nice person in general.
| A．shall | B．should | C．can | D．must |
—Did you have a good time in Thailand last week?
— ______, it was too hot.
| A．No! really | B．Yeah, why not | C．Oh, great | D．You’re right |
If there's a lot of work______. I'm happy to just keep on until it is finished.
| A．to do | B．to be doing | C．done | D．doing |