There are students in our school.
| A．three thousand | B．three thousand of |
| C．three thousands | D．three thousands of |
–Why do you look so sad?
-Bad luck! I made some mistakes in the test. I was not ___________.
| A．enough careful | B．enough careless |
| C．careful enough | D．careless enough |
________ hard is the key to success.
| A．To work | B．Work | C．Worked | D．Works |
Amy has just found a wallet lying on the ground. Can you find the correct sentence element(句子成分) of the underlined words in the sentence?
| A．object complement | B．predicate | C．attributive | D．adverbial |
--Shall we go for a picnic on Saturday or Sunday?
-- ______ is OK. I am free this weekend.
| A．Either | B．Every | C．Both | D．Neither |
My son ______spend all his pocket money, but now he ______saving some of it.
| A．was used to…used to | B．used to…is used to |
| C．used to…used to | D．was used to…is used to |