He plays basketball so well! Who taught _______?—He learnt it by _______.

The woman wants to find a job _____ ababysitter.[ ]

The girls are dancingthis famous music.[ ]

Why are you standing there, Kangkang? —I can’t see the blackboard clearly. Two tall boys are sitting______me. [ ]

What ______ the forest of Yangzhou in the last 30 years?—Yangzhou has become much greener.