let us ___ you __ the piano jack Ato watch , to play B to watch , to play Cwatch, to playDwatch..play
问题描述:
let us ___ you __ the piano jack Ato watch , to play B to watch , to play Cwatch, to play
Dwatch..play
答
D lets do sth
答
D let sb do sth watch sb do/doing sth