Itwas1997_____HongKongwashandedbacktoChina. A: which B: where C: whether D: when

Itwas()whofirstintroducedandreformedtheE...fWilliamShakespeare.

Notonly______difficulttolight,butitsmelledofoil. A: wasit B: itmade C: diditmade D: itwas

<spanstyle="text-decoration:underline;">Itwas</span>about600yearsago<spanstyle="text-decoration:underline;">when</span>thefirstclock<spanstyle="text-decoration:underline;">with</span>afaceand<spanstyle="text-decoration:underline;">anhourhand</span>wasmade. A: Itwas B: when C: with D: anhourhand

正是经过彻底检查后，他们才发现故障所在。(Itwas…that)

【单选题】香港和澳门先后在()年回归祖国。 A. 1997 1999 B. 1997 1997 C. 1999 1997 D. 1999 1999

中国大学MOOC: Itwas not until 1919 when Peace Conferencewas held, a largenumber of interpreters were hired.

____the 1500s ____ the first Europeans explored the coast of A: It was not until…when B: It is until…that C: It was not until…that D: Itwas until…then

Thefirstrecordeduseofnaturalgastolightstreetlamps<spanstyle="text-decoration:underline">itwas</span>inthetownofFrederick,NewYork,in1825. A: was B: is C: itis D: were

香港、澳门回归的时间分别为() A: 1978、1999 B: 1997、1996 C: 1997、1999 D: 1999、1997