—The twins are good at singing. —Yes, but I don’t think Lily sings as _________ as Jane.
Your help made __________ for me to work out this problem.
I don’t think _______ Maths is easy.
Thanks for _________ the new chairperson.
He couldn’t hide his __________ at my success and said bad words about it.
Are you going to __________ this challenge?(挑战)