Complete the sentences with to-infinitive of the verbs in the box. There are two extra verbs.

increase – make – improve – play – phone – attend – travel – talk

1. We can’t decide whether _____ a presentation on renewable energy or not.

2. Minh asked his teacher how _____ his public speaking skills.

3. Could you show me who _____ to if I want to rewrite my assignment?

4. It’s not easy for him to learn how _____ golf.

5. Thanh is still at home because he hesitates about whether _____ his ex-girlfriend’s graduation ceremony.

6. My best friend always plans in advance where _____ during her summer break.