Grammar LV3 — Quiz — Day 2: Cleft Sentences

1 Which is an it-cleft sentence?
2 Rewrite as a wh-cleft: "I need more time." -> "___ I need is more time."
3 What is the main purpose of a cleft sentence?
4 Complete: What surprised me ___ his calm reaction.
5 Which sentence puts the most emphasis on "the wait" as the cause of annoyance?