Complete the sentences with the right form of the verbs given to make either the first or the second conditional. 1. If grandpa the TV set, we will be able to watch our favourite programme. (fix)
2. If I were you, I to her more politely. (speak)
3. If Zack harder, he will pass his driving test. (try)
4. If he , I will never speak to him again. (not apologise)

1. If grandpa fixes the TV set, we will be able to watch our favourite programme.
Explanation: In this sentence, we use the simple present tense in the if-clause ("grandpa fixes") to talk about a possible condition or situation. The main clause ("we will be able to watch our favourite programme") uses the modal verb "will" to express possibility or certainty.

2. If I were you, I would speak to her more politely.
Explanation: In this sentence, we use the past subjunctive form "were" in the if-clause ("If I were you") to talk about a hypothetical or unreal situation. The main clause ("I would speak to her more politely") uses the modal verb "would" to express an action that is likely to happen based on the hypothetical condition.

3. If Zack tries harder, he will pass his driving test.
Explanation: In this sentence, we use the simple present tense in the if-clause ("Zack tries") to talk about a possible condition or situation. The main clause ("he will pass his driving test") uses the modal verb "will" to express possibility or certainty.

4. If he doesn't apologise, I will never speak to him again.
Explanation: In this sentence, we use the simple present tense with the negative form "doesn't apologise" in the if-clause to talk about a possible condition or situation. The main clause ("I will never speak to him again") uses the modal verb "will" to express a consequence or result of the condition not being fulfilled.