(African) elephants are larger, (fiercer), and (difficulter) to tame (than) Asian elephants.

单项选择题(As is known) to all, sometimes it is very (difficult) to (tell) the difference between technical English (from) everyday English.

单项选择题I (think) I (would enjoy) the movie we went to last night even more (if I had) read the book before (seeing) it.