[RonBee]

Q1. The flight was fully booked. We wanted to travel on it. ( Join it by using "which")

A1. ( The model answer is) The flight which we wanted to travel on was fully booked. Alternately, We wanted to travel on the flight which was fully booked. ( Is this correct or is there another way of rewriting it correctly? )

The first answer is good, but the other one is questionable. (It seems to say you knew that flight was fully booked before you decided to take that flight.)

There are alternative (perhaps better) ways of saying that. Possibly:

• The flight we had wanted to travel on was fully booked.

As you can see, I would use past perfect there. (You wanted to take that flight, but you couldn't so you took another one.) Another possibility:

• The flight that we had wanted to take was fully booked.

I think the second example is more idiomatic (natural).

Q2. Ann waited for me. It rained. (.............when.........)

A2. (The model answer is) Ann was waiting for me when it rained.
Alternately, can we rewrite it as: It rained when Ann was waiting for me. ( Is there any other alternatives?)

I would say It rained while Ann was waiting for me. (I hope she had her unbrella.)

PLEASE ADVISE AGAIN, teachers! Thanks for taking the time in replying my questions! T_T

Say: "Thanks for taking the time to reply to my questions."

You're welcome.

:D