lab，gym，the，the，is，the，behind(连词成句)

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--      the science lab ?
– It’s behind the library .

--      the science lab ?

– It’s behind the library .

A．How’s           B．Why’s           C．Where’s         D．What’s

A new lab ________ in our school now.

1. A.
   is being built
2. B.
   will be built
3. C.
   is building
4. D.
   has built