Нужно подобрать синонимы к каждому слову.
1. to dispose of - to distrust
2. to arrange - to go together
3. to examine - to inspect
4. to declare - to blame
5. to suspect - to sell
6. to contradict - to estimate
7. to accuse - to suppose
8. to accompany- to settle
9. to guess - to announce
10. to size up - to argue

1) When the president arrives , they will start the meeting.

2) If he reaches the sales target this year, the company will award him.

3) We hall start the construction of a shopping centre as soon as the local  government allows us to begin.

4) After she finds a good job, she will be able to buy a house.

5) I have to finish the reports before the manager will call.

6) We shall order 100 units after the manager approves the estimate.

7) I will not buy anything new until I pay all my debts.

8) I will buy a new TV set if the prices goes down.

9) As soon as you push this button the door will open.

10) You should read the contract carefully before you will sign it.

11) We shall discuss the plans after he gives the presentation.

12) Before you accept the job offer, you will need to be confident that  the company is a good place for you to work.

13) Any rebates will be subtracted after you negotiate the price.

14) We will send payment as soon as you fax the signed contract.

15) They will launch the new product after they test the market.

Объяснение:

1)They were dusting the rooms
At 12 o'clock on Sunday the children were skating
Were the children skating?
What were they doing?
Where were the children skating?
When were the children skating?
Эти предложения в past continuous
2)))I was reading a letter at 7 o'clock
She was waiting for her friend at from 5 till 6
Mary and helen were listening to music when I came
3They were watching TV
We were talking about music
She was making breakfast
4)

I went home at 7
I was going home at 7
What did your friend do yesterday?
While you were telling funny stories your brother was talking to me in the living room
Bob was listening to music the whole evening. he wasn't doing his homework
I met my friend at the library while he was taking a book
The child was sleeping when the doctor came