all the teachers here are very nica and they always do what they can __(help的什么变化形式）us with our studies

all the teachers here are very nica and they always do what they can __(help的什么变化形式）us with our studies
all the teachers here are very nica and they always do what they can __(help的什么变化形式）us with our studies

all the teachers here are very nica and they always do what they can __(help的什么变化形式）us with our studies
答案用 to help ,表示目的.what they can 在此作do的宾语从句,词面意思为“他们能做的事”,他们做“他们能做的事”的目的就是为了帮助我们.不要受can（情态动词）后接动词原形的影响.他们力所能及的帮助我们学习.

to help

填 to help

全是我自己来的，还算专业，若帮到了你，记得采纳哦-,0