Ответ:
1) I was so tired that I couldn’t stop yawning. Форма после couldn’t stop — глагол с окончанием -ing.
2) She let out a deep sigh of relief after her exam. Устойчивое сочетание: a sigh of relief — вздох облегчения.
3) The crowd cheered, so that nobody could hear. Cheered подходит по смыслу: толпа громко приветствовала.
4) The sound of his snoring was so loud that I couldn’t sleep.
5) We heard a scream of surprise from the audience when the magician vanished.
6) It’s nice to chat with friends online.
7) The children cheered with joy when they saw the ice cream.
8) There’s a storm coming, so we should stay at home.
9) It’s okay to cry when you feel sad.
Ответ: yawning, sigh, cheered, snoring, scream, chat, cheered, storm, cry.
