It is reported that two young officer gave their life in solving the incident. Don't you think the _______ is too great?
| A．value |
| B．cost |
| C．risk |
| D．challenge |
You _____ have bought the book for me, but thank you all the same.
| A．shouldn’t | B．needn’t | C．can’t | D．mustn’t |
I forget where I saw the skirt, otherwise I _______ you the shop now.
| A．will tell | B．would tell | C．am going to tell | D．am telling |
The fact has worried people _______ the number of the deaths is still increasing.
| A．what | B．which | C．that | D．when |
Either you or he _______ to give them a lecture tomorrow.
| A．is | B．are | C．has | D．have |
I _______ online games for two years, but I’ve never regretted giving it up.
| A．play | B．was playing | C．played | D．had played |