All the students ________ to do better in the coming examination.

[　　]

A．made their mind up

B．made up their mind

C．made their minds up

D．made up their minds

There are many islands ________ the coast of the Irish Sea.

[　　]

We found the lake completely ________.

[　　]

They went across the river, ________ a small boat.

[　　]

Some fish can stay at a certain depth without sinking or coming to the surface ________ an air bag.

[　　]

It makes no difference ________ we'll find a boat this week or next week.

[　　]

Do come and join us. We'll be sorry if you ________.

[　　]

Behind the girls ________ an old lady with two grandchildren.

[　　]

There're nearly one hundred and twenty teachers in our school and ________ of them are women.

[　　]

When you leave the room, don't forget to keep the door ________.

[　　]