B. Match the main sentence with the relative clause.

B. Match the main sentence with the relative clause.

1. Neil Armstrong was the first man. $\rightarrow$ b. who set foot on the moon.
2. Saint Valentine is an occasion. $\rightarrow$ d. when lovers exchange postcards.
3. A pharmacy is a place. $\rightarrow$ c. where you buy medicines.
4. The student. $\rightarrow$ e. whose father won the lottery.
5. That's the hotel. $\rightarrow$ a. which burned down last night.

C. Put the verbs between brackets in the correct form.

1. If you heat water to 100 degrees, it boils.
2. If you don't turn the gas off, something horrible will happen.
3. Please, if you meet Mr. Hafid, tell him to call me as soon as possible.