be glad to do sth 还是be glad doing sth
be glad to do sth 还是be glad doing sth
be glad to do sth.
be afraid of doing sth be busy doing sth be glad to do buy s
用be glad to do sth造个句,
be honored to and glad to do sth和be honored and glad to do s
be scared to do sth还是be scared doing sth
be heard to do sth 还是 be heard doing sth?
be worth to do sth 还是be worth doing sth
be accustomed to后面加do sth.还是doing sth?
Attentions must be paid to do sth还是doing sth
be afraid to do sth be afraid of doing sth
be +形容词+to do something还是doing sth