My grandpa is _________ weak ______ look after himself．He needs help．

My grandpa is _________ weak ______ look after himself．He needs help．

#56165

so, that

very, to

so, to

too, to

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 --_______ will the meeting last? --_______ they reach an agreement.

#55956

How long; Not until

When; Not until

How long; Until

When; Until

Someone called me up in the middle of the night, but he hung up ______ I could answer the phone.

#57250

since

until

before

Lucy likes drawing,______ she doesn’t like reading.

#57148

and

but

You won’t feel happy at school ______ you get on well with your classmates.

#58383

though

when

unless

because

Some physics problems in this book are _________difficult for the students _________work out.

#55219

so; that

not; but

such; that

too; to

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