—I’m not sure ______ Bill will come or not.

 —I’m not sure ______ Bill will come or not.—No, he isn’t.

#36678

when

whether

weather

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They arrived _____ Wuhan _____ a cold morning.

#39484

in; in

at; on

in; on

at; in

---Hi，guys. How was your party yesterday？ ---Wonderful！We had a big meal and enjoyed ________  .

#39621

themselves

myself

yourselves

ourselves

Before I talked with ______ scientist, I had never met ______ knowledgeable person like him.

#39391

a; a

the; the

the; a

a; the

The only problem was there was nothing much to do in the evening        read.

#42474

and

then

but

It is_______ interesting book ,we all like it.

#39609

such a

such an

so a

so an

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