I started working at this hotel six months ago. (Rewrite, use the present perfect)
I have been working at this hotel for six months.

Susan has been in Italy for the last three weeks. (Rewrite, use went)
Susan went to Italy three weeks ago.

How long have you lived here? (Complete the second sentence)
When did you move/come here?

I don't have a laptop to do the project with my friends. (Complete the second sentence)
I wish I had a laptop to do the project with my friends.

It's a pity John can't come to my birthday party this weekend. (Rewrite, use a wish sentence)
I wish John could come to my birthday party this weekend.

The metro system/ Ho Chi Minh City/ not/ officially/operate/ yet. (Sentence building)
The metro system in Ho Chi Minh City has not officially operated yet. (Or: The Ho Chi Minh City metro system has not officially operated yet.)

Don't forget to bring your passport for the trip. (Rewrite, use remember)
Remember to bring your passport for the trip.

While/I/ go shopping/ yesterday/ I/ meet/ old friend/ mine. (Sentence building)
While I was going shopping yesterday, I met an old friend of mine.

I will pass the entrance exam. I will study hard. (Combine, use condition type 1)
If I study hard, I will pass the entrance exam.

Mark finally succeeded in persuading his parents to accept his career choice.(managed)
Mark finally managed to persuade his parents to accept his career choice.