Choose the best answer to complete the sentences

A. turn off

B. turn on

C. turn down

D. turn up

A. save

B. to save

C. saving

D. saved

A. is

B. was

C. were

D. will be

A. moreover

B. so

C. and

D. however

A. beauty

B. beautiful

C. beautifully

D. beautify

A. must

B. can

C. should

D. have to

A. polluted

B. polluting

C. pollution

D. to pollute

A. looked at

B. looked for

C. looked after

D. looked in

A. because of

B. in spite of

C. in case of

D. instead of

A. running

B. dripping

C. dropping

D. cutting

A. take

B. to take

C. taking

D. having taken

A. melt

B. soften

C. heat

D. dissolve

A. products

B. resources

C. preserves

D. produces

A. preserving

B. preserve

C. preservation

D. preserver

A. understand

B. don’t understand

C. won’t understand

D. didn’t understand

A. looks on

B. looks in

C. looks at

D. looks after

A. but

B. however

C. moreover

D. and

A. turn on

B. turn down

C. turn up

D. turn off

A. saving

B. save

C. to save

D. saved

A. despite

B. so

C. because

D. because of

A. at 

B. for

C. to

D. on

A. because

B. because of

C. although

D. despite

A. go

B. going

C. to go

D. went

A. change

B. changes

C. will change

D. changed