At present the experiments ________by the students.

[　　]

That kind of animals________ until quite recently.

[　　]

A．appeared in the wild

B．appeared to the wild

C．didn’t appear in the wild

D．didn’t appear to the wild

It's too expensive． I won't buy it ________.

[　　]

A． at that price 　　　B． at a that price

C． on that price 　　　D． in this price

They used the money which they________ help the people who had lost their homes.

[　　]

A．need to

B．to need

C．to collect

D．collected to

All the children thought the animal could ________.

[　　]

[　　]

A． went to bed 　　　B． finished my homework

C． watched TV 　　　D． began to watch TV

When the fire ________he happened to ________.

[　　]

Mother ________ to put the ________ oil out when he came back.

[　　]

A．was trying ,burning

B．was being tried , burning

C．was tried , burnt

D．had tried , burnt

Have you found ________ read in the sun ?

[　　]

You ________ your parents for advice in future.

[　　]

A．should ask

B．have asked

C．would ask

D．had asked