She took part in the ________last week, but unluckily she lost it.
| A．friend | B．competition | C．journey | D．prize |
---You are late again. The class ________ for five minutes.
---Sorry. There is something wrong with my bike.
| A．began | B．has begun | C．was on | D．has been on |
_______ the mouse, you can choose an icon _______ for more details.
| A．By; to click on | B．With; to click on |
| C．With; to click | D．By; to click it |
----Look at the boy running on the playground. Is it David?
---- It ______ be him. I saw him go to the teachers’ office just now.
| A．mustn’t | B．can’t | C．may not | D．needn’t |
---With 4G mobile phones, people can even see each other as they talk.
----Really? Would you show me it, please?
| A．how to use | B．when to use | C．where to use | D．what to use |
--______ to Hong Kong?
-- Yes, and I will be back next month.
| A．Have you gone | B．Have you been | C．Are you going | D．Did you go |