He was deep in thought with his eyes____

He was deep in thought with his eyes_____ on the ceiling.

#4933

fixed

fixing

fix

to be fixing

推荐题目

We shouldn’t spent our money testing so many people, most of _____are healthy

#5034

that

which

what

whom

.. ________the cake________five parts. We will share three of them and leave the rest to Jack.

#4783

Separate …from

Take …from

Divide … into

Divide …from

Because of ______ high demand for Type AB blood, ______ supplies of it are usually limited．

#4619

the; the

/; /

/; the

a; the

.It is no use ______ after you know your failure.

#4686

cry

to cry

crying

cried

Luckily, Smith brought a map, __________ we would have got lost.

#4527

that

of which

without which

which