1.Do you know whether he is on holiday or ( A.in business B.
1.Do you know whether he is on holiday or ( A.in business B.
Do you know the boy( )black?Maybe he is new.A.in B.put on C.
Do you know ()they enjoy it or not?A if B whether C how D wh
He is()holiday()Beijing.a:on ,at.b:in,in.c:on,on.d:on,in
Are you here on business or ___ fun A,in B,on C,at D,for
Do you know where___? A:he is B:he was
Do you know the name __Mr Green's son?A in B of C on D or
Do you know ___people in the business/ A.another B.others C.
He is ___ holiday in Beijing.A.in B.on C.for D.at
Do you know No,Idon'know A.where he's from B.where is he com
1.I did not know ___ him or not.A.whether to help B.if to he
Do you know whether or not it's impolite to smoke during a m