1 . Though Mary is not very brave, she likes to watch movies that are scary once in a w________.

2 . The boy has been busy doing his homework. Only ________ he looks out of the window. (偶尔；间或)

3 . If you have to work in front of the computer, it is best to take a rest every once in a ________.

4 . 我叔叔偶尔去公园。
My uncle goes to the park ________.

5 . Someone lit a candle when the lights went out ________.

A．in total

B．all of a sudden

C．once in a while

D．by accident

6 . —Sorry, Jean. I’ve been to Fun times Park twice.
—________, I’ll ask Maria to go with me.

A．In that case

B．In total

C．Once in a while

7 . 人无完人。我偶尔也会犯错。
Nobody is perfect. I also make a mistake _____________________.

8 . —Sorry, I didn’t do a good job.
—Never mind. ________ you’ve tried your best.

A．That is to say

B．Once in a while

C．After all

9 . —Mike can’t go to the party with us because he has to stay at home and look after his mother.
— ________, we won’t wait for him any more.

A．After all

B．In that case

C．Once in a while

10 . —I’ve made up my mind to buy the house no matter how high the price is.
—________, there’s no point discussing it.

A．In total

B．Once in a while

C．In that case