`1.` We are excited about getting high scores.

`->` be excited about doing sth `=` look forward to doing sth: mong chờ điều gì/làm gì

`2.` Susan had no difficulty in passing the exam.

`->` have no difficulty in doing sth: không gặp khó khăn trong việc làm gì

`3.` They had difficulty in speaking Chinese.

`->` have difficulty in doing sth: gặp khó khăn trong việc làm gì

`1.` We are excited about getting high scores

`->` S + be + looking forwad + to V-ing

`=` S + be excited about + V-ing

`2.` Susan had no difficulty in passing the exam

`->` had not difficulty in + V-ing: không gặp khó khăn khi làm gì

`3.` They had difficulty in speaking Chinese

`->` had difficulty in + V-ing: gặp khó khăn khi làm gì