How much did it cost to build the science lab? Five ____ yuan.
A. millions B. million C. millions of
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Please turn ___left and the library is ____ your right.
A./,on B. to,/ C. on, to D in , on
Is there a library? ______.
A. Yes, there isB. Yes, it isC. it isn’t D No , there is
---Do you know Mr. Smith?
---Yes. He is the man _______ has short black hair.
| A．which | B．why | C．who | D．when |
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