1.

I have to be at the airport no later than 10:30. 
I have to be at the airport  .

2.

Let me know no later than Saturday whether you can come to the party.
Let me know  .

3.

Please make sure that you are here no later than 2:00.
Please  .

4.

If you want to take the exam, you have to register no later than April 3.
If  .

5.

If we leave now, we should be in Miami no later than lunchtime.
If  .

1.

I've been offered a job. I haven't decided yet whether to accept it or not. I have to decide  by until Thursday.

2.

I think I'll wait  by until Thursday before making a decision.

3.

A: I hear you're writing a book. Have you finished it yet?
B: Not quite, but I hope to finish it  by until the end of this month. 

4.

A: I'm going out now. I'll be back at 4:30. Will you still be here?
B: I don't think so. I'll probably have gone  by until then. 

5.

I'm moving into my new apartment next week. I'm staying with a friend  by until then.

6.

A: Do you think I'll still be unemployed this time next year?
B: No, of course not. I'm sure you'll have found a job  by until that time. 

1.

I had to catch a train, but it took me longer than expected to get to the station. , my train had left. 

2.

I saw two men who looked as if they were trying to steal a car. So I called the police. But it was some time before the police arrived., the two men had disappeared. 

3.

A man escaped from prison last night. It was a long time before the guards discovered what had happened.
, the escaped prisoner was miles away. 

4.

I intended to go to the movies after finishing my work. But I finished my work much later than expected.
, it was too late to go to the movies. 

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