用方框中所给动词的适当形式填空It is polite to let the old man ______ on your seat on the bus.
Our Chinese teacher _____ a new tie yesterday.
Sandy is learning ______ the types and numbers of the birds in Zhalong.
The thick fog prevented some students from ______ at school on time this morning.
There _______ a football competition between our school and Hailing Middle School next Sunday, isn’t there?