confusing missing words ....

[herbiji]

Hello everyone
I have been asked to supply the missing words in the following sentences
Would anyone, please, help me with them and suggest the correct missing words?
The first letter of each word is given.

1-Nowadays there are a lot of spacecraft in o…………… round the world. (The first letter in the first sentence is "O".

2- A play is usually put into a r ………… before it is acted.

3- He is S……………. indeed, He has answered all the questions.

4- They C…………. by asking so many questions.

please help me

Thanks in advance

[herbiji]

Please, If anyone can suggest answers. I am still in need for your help

[nonsense]

1. orbit
2. rehearsal... but the sentence is awkwardly constructed. We also do a runthrough.
3. smart... sneaky... successful... serious... I would use clever myself.
4. collaborate... contribute... control (something)... compete... confuse (me) ... complicate (things)... captivate (someone)... cooperate... Do you have a word bank to work from?