I went to a restaurant last night, I was the ten thousandth customer, so my dinner was

on the _______.

A. holiday B. house C. free D. decrease

John congratulated us _______ our exam with high marks.

A. on passing B. for passing C. to pass D. on pass

Billy was the youngest boy _______.

A. joining the club B. that was joined the dub

C. to be admitted to the club D. admitted to the club

Some snakes lay eggs, but _______ give birth to live offspring.

A. others B. the other C. other D. the others

 With.... 5,000 tigers remaining in the world today, time is quickly running out for this beautiful animal

A. everybody says

B. One of the reasons

C. It is often claimed

D. because

Many people are still in _______ habit of writing silly things in _______ public places.

A. the – the B. the - x C. x - the D. x - x

It was found that he lacked the _______ to pursue a difficult task to the very end

A. persuasion B. commitment C. engagement D. obligation

Many of the pictures_______ from outer space are presently on display in the public library

A. sending B. sent C. having sent D. were sent

Housework is less tiring and boring thanks to the invention of _______ devices.

A. labor-saving B. environment-friendly C. pollution-free D. time-consuming

 You should always check the sell ... date of things you buy in the supermarket.

A. in

B. through

C. by

D. off