Question

【题目】How happy all the students were ________ (see)each other after such a long vacation because of the Covid-2019 !

Answer 1

【答案】to see

【解析】

句意：因为Covid-2019，经过这么长的假期，所有的学生都很高兴能见面！

see v. 看到。观察句子。这里已经有了谓语动词were，那么这里应该用非谓语，结合句意应该是“很开心去做某事be happy to do sth”，故答案为to see。