Do you believe that humans could live on Mars?
I don't think _____________________.( )
A.if it comes true
B.that it will come true
C.why it will come true
D.how does it come true
It's said that the Weast Lake is one of the most beautiful lakes in China.Do you think so?
Yeach,I _____there twice bofore!It attracts lots of tourists from home and aboard.( )
A.have beenB.have goneC.goD.went
Waiter,I'd like some Ningbo Dumplings.
Sorry,sir.Ningbo Dumpings ______only for lunch and dinner.( )
A.serveB.served
C.are servedD.are serving
Have you returned the book to the library yet?
Not yet.Don't worry.I ______it soon.( )
A.returnB.returned
C.have returnedD.will return
I really want to join the square dance.Can I learn the dance well?
Yes,Mom!Nothing is impossible______you put your heart into it!( )
A.as long asB.as soon as
C.even ifD.unless
Don't ______late.Betty.You have to go to school early tomorrow.
OK,Mom.I'll go to bed right now.( )
A.put upB.stay upC.sit downD.fall down