Although it ________ as hard as ________ stone, it easily melts when ________．

feels…\…heated

feels…a…heated

is felt…a…heated

feels…\…heating

We ________ last night, but we went to the concert instead．

must have studied

might study

should have studied

would study

In a room above the store, where a party ________, some workers were busily setting the table．

was to be held

has been held

will be held

is being held

________ the days went on, the weather got worse．

With

Since

While

As

Never in my wildest dreams ________ these people are living in such poor conditions．

I could imagine

could I imagine

I couldn't imagine

couldn't I imagine

My suggestion is that you should ________ yourself to the new urban living style．

make

obey

adapt

assist

________ I accept that he is not perfect, I do actually like the person．

While

Since

Before

Unless

The two biologists debated ________ each other for years ________ the origin of species．

with; about

about; for

between; over

to; for

John rushed out in a hurry, ________ the door ________．

leaving; unlocked

leaving; unlocking

left; unlocked

sang; singing

Mrs．Brown was much disappointed to see the washing machine she had ________ went wrong again．

it repair

it repaired

had repaired

to be repaired