He stopped_____ homework when dinner was ready.A. to doB. doC. doing

18. ____than it began raining.

A.Hardly had he reached home B.Hardly did he reach home

C.No sooner did he reach home D.No sooner had he reached home

A.instead of going home

B.instead of him going home

C.instead that he went home

D.instead that he was going home

He will come home as soon as he ______ his homework at school. (finish)

He is thoroughly __ in this newly developed branch of knowledge ___ computer science.

A、in home

B、in his home

C、at home

D、at his home

A.to

B.on

C.in

D.up

He goes to work () foot but comes back home () taxi.

A.by…by

B.on…by

C.by…on

It was()he arrived home()he realized that he had left his keys in the office.

A) until……that

B)not until……had

C) until……had

D)not until……that

A.board

B.aboard

C.broad

D.abroad