1. put the verbs in brackets into the correct form ( -ing form, infinitive with to or without to). • i’d rather …………… (swim) in the sea than …………… (ski) in the mountains. • i prefer …………… (sleep) in the hotel to …………… (sleep) in a tent. • he would prefer ……………….. (watch) tv rather than ……………… (go) to the party. • jeff would rather ……………….. (go) out than ……………. (stay) in. • they prefer ………………….. (walk) to work to …………………… (take) a taxi. • helen would rather ……………… (make) her own clothes than ……………… (buy) them. • frank prefers ………………. (play) chess to ……………….. (listen) to music. • we would prefer …………….. (paint) the house ourselves rather than ……………. (pay) someone else to do it.

Below are the completed sentences with the verbs in their correct forms based on English grammatical rules for preferences:

• I’d rather swim (swim) in the sea than ski (ski) in the mountains.
  (Rule: "Would rather" is followed by the infinitive without "to".)
• I prefer sleeping (sleep) in the hotel to sleeping (sleep) in a tent.
  (Rule: "Prefer" followed by the -ing form when comparing two activities with "to".)
• He would prefer to watch (watch) TV rather than go (go) to the party.
  (Rule: "Would prefer" takes the infinitive with "to", but the second verb after "rather than" usually takes the infinitive without "to".)
• Jeff would rather go (go) out than stay (stay) in.
  (Rule: "Would rather... than" uses bare infinitives for both actions.)
• They prefer walking (walk) to work to taking (take) a taxi.
  (Rule: General preference using the gerund (-ing) to compare two actions.)
• Helen would rather make (make) her own clothes than buy (buy) them.
  (Rule: Another instance of "would rather" requiring the base form of the verb.)
• Frank prefers playing (play) chess to listening (listen) to music.
  (Rule: Use the gerund when expressing a general liking of one activity over another.)
• We would prefer to paint (paint) the house ourselves rather than pay (pay) someone else to do it.
  (Rule: "Would prefer" followed by to-infinitive, followed by a bare infinitive after "rather than".)

You can verify these patterns and practice similar structures using the Cambridge Dictionary Grammar guide or the British Council LearnEnglish website. To continue practicing, you might want to convert these sentences into negative forms or rewrite them using "would sooner" to see how the structure changes.