看看这两道用适当形式填空的题1、please let me know if you can't____(attend) our class party.2、the speech of the headmaster___(mark)the beginning of the meeting.

看看这两道用适当形式填空的题1、please let me know if you can't____(attend) our class party.2、the speech of the headmaster___(mark)the beginning of the meeting.
看看这两道用适当形式填空的题
1、please let me know if you can't____(attend) our class party.
2、the speech of the headmaster___(mark)the beginning of the meeting.

看看这两道用适当形式填空的题1、please let me know if you can't____(attend) our class party.2、the speech of the headmaster___(mark)the beginning of the meeting.
1.attend can是情态动词,后面加动词原型,can't do sth
2.marked 标志着会议开始,不是被动语态,marks也行,不过要求现在时态

1.attend
2.marked

attend
can是情态动词，后面加动词原型
marked
过去分词作形容词，被动语态

1. attend
2. marked/ marked