Read these sentences and complete them with should or should have + the verb in brackets. Write your answers, don't use capital letters. 2. I’m playing tennis with Sam tomorrow. He - he is better than me. (win) 3. He posted these letters two weeks ago, they by now. (arrive)

2. I’m playing tennis with Sam tomorrow. He - he is better than me. (win)
In this sentence, we need to choose between "should" and "should have."
Since the action of playing tennis with Sam is happening in the future (tomorrow), we should use "should" followed by the base form of the verb.
So, the correct sentence would be:

"I’m playing tennis with Sam tomorrow. He should win - he is better than me."

3. He posted these letters two weeks ago, they by now. (arrive)
In this sentence, we need to choose between "should" and "should have."
Since the action of posting the letters happened in the past, we should use "should have" followed by the past participle form of the verb.
So, the correct sentence would be:

"He posted these letters two weeks ago, they should have arrived by now."