To construct a question involving the word "which", you must ask what one (or more) of many is the thing you are asking about.
For example:
Which of those books are from the library?
Or: which of these examples do you understand?
Our train is leaving in two hours so we can have a cup of coffee and enjoy the sunshine while waiting.Next summer,the company is seting up new offices in Indonesia.
2 is
3 aren't
4 doesn't
5 didn't
6 can
7 hasn't
8 should
9 hasn't
10 won't
26) behind/across
27) part
28) like
29) may
30) be
31) more
32) making
33) tell
34) suitable
35) formed
I: Hello, how are you?
Friend: Hi, I’m fine, thank you.
I: What happened?
Friend: I have a new skateboard.
I: OMG! It’s so cool.
Friend: I know. It’s so fast. Let’s ride?
I: OK. Let’s ride.