Some physics problems in this book are _________difficult for the students ________

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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 Milk quickly goes bad in summer       it is in a fridge (冰箱).

#55517

because

unless

When

Although he is really heavy,   he still runs fast.

#57109

but

and

 Daisy has been learning Putonghua __________ the age of five.

#55169

since

for

The camera is too expensive ________.

#56131

for him to buy it

so that he couldn’t buy it

so that he can’t buy

for him to buy

--- Don't give yourself_______ stress.--- I know, but this case is_______ important for me.

#56133

too much; much too

too much; too much

much too; too much

too many; much too

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