根据句意,用括号中所给词的适当形式填空。并将答案写在答题卷相应位置上。
He always makes me ________ when I am sad. (laugh)
Some from the USA went to visit Yunnan History Museum. (tour)
The sea is big on the earth , but the sky is than the sea.(big)
Maybe I can’t go swimming with you. I have a . I have to see a dentist. (tooth)
The number of the students in our school 3000 this year. (be)