Jawaban:

1. If we have some help, there WON'T BE a problem.

2. I will wear a coat if it IS cold

3. They will understand if you EXPLAIN it

4. Will he go if the meeting is at 7:00?

5. If it doesn't rain, they will have a an picnic.

Penjelasan:

First conditional tense biasanya menggunakan pola: If + condition, main clause (result)

atau jika di balik:

Main clause (result) if + condition

Contoh: IF you help me (condition), I WILL help you (menggunakan koma, antara 'condition' dan 'result')

or

I WILL help you (result) if you help me (condition)

(nggak menggunakan koma kalau 'IF' ditaruh di tengah)

IF you make a drink (condition), he WILL drink it (result).

He WILL drink it (result) IF you make a drink (condition).

IF she doesn't come to school (condition), I WILL come to her house (result).

I WILL come to her house (result) IF she doesn't come to school (condition).

Jadi setelah IF, tidak pernah diikuti dgn 'Will'. Atau pada part 'condition', tidak pernah diikuti dengan 'Will'. 'Will' hanya digunakan di bagian 'result' (Main clause')