— Do you know _______ they got to know each other?
— It was last year_______ they both taught Chinese in Canada.
| A．When it was that, when | B．when it was that, while |
| C．When it was that, that | D．When it was that, as |
-- We hadreally smoggy December this year.
--- I can’t rememberwinter when air was polluted so severely.
| A．a; / | B．a; the | C．the; the | D．a; a |
At present, there are many instances the governments distribute money to the citizens worldwide, but the sources of fund are still limited.
| A．how | B．which | C．where | D．when |
--- Shall we watch Personal Tailor directed by Feng Xiaogang this weekend?
---. Isn’t it meaningful that we do some voluntary work in the nursing house?
| A．How come | B．Forget it | C．Don’t mention it | D．Couldn’t agree more |
On 5 December 2013,China Central Bankprohibited financial institutions from handling Bitcoin transactions,_____ to regulate the virtual currency.
| A．moved | B．to move | C．having moved | D．moving |
--- Do you remember the first time youwith a foreigner?
--- Not really, but I remember it was in a KFC.
A. talked B. had talked C. have talked D. are talking