By the end of this week, I_________here for ten days.
A.stay
B.am staying
C.will stay
D.will have stayed

Don't you know what happened_________the people who went on holiday with us?
A.to
B.with
C.for
D.at

Spain_________once a very powerful country.
A.was
B.is
C.used to
D.has been

Everything_________turned out to be imaginary.
A.she said it
B.she said
C.which she said it
D.that said

I_________like that dress. It's really nice.
A.do
B.very
C.am
D.have

We hope to have the law _________by December.
A.pass
B.to pass
C.passing
D.passed

Although I was very tired, _________.
A.but I helped to clear up the mess after the party
B.I helped to clear up the mess after the party
C.and I tried to clear up the mess after the party
D.I didn't help to clear up the mess after the party

I took off my shoes before entering the room _________.
A.in order to not dirty the floor
B.so that I not dirty the floor
C.in order not dirtying the floor
D.so as not to dirty the floor

The living conditions of the population _________in the past years.
A.has been improved
B.have been improved
C.improved
D.were improved

_________these plants regularly or they will die.
A.Water
B.If you water
C.Unless you water
D.Because you water