95. I had a computer lessons first. Then I went on ___________ (have) tennis lessons.

94. The students kept ___________(talk)about the football match.

93. You'd better try ___________ (do) it by yourself.

92. Can a shark stop ___________ (swim)? -No, It can't

91. Have you saw someone ___________ (ski) before?

90. Have you finished ___________ (read) the book?

89. Who is doing well in ___________ (describe) things?

88. You'd better try to give up ___________ (smoke). It's too bad to your health.

87. We ___________ never ___________ (be) to Hawaii.

86. Miss Green ___________(be) in China for 6 years.