A communicative satellite ________________ as much as 3.5 tons was sent up into space last week.
A. weighing B. weighed C, to be weighed D. being weighed
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71.The Parkers bought a new house but ____ will need a lot of work before they can move in.
| A．they | B．it | C．one | D．which |
72. I hate___ when people talk with their mouths full.
| A．it | B．that | C．these | D．them |
73.Joan had often heard____ said that Marley had no money.
| A．it | B．this | C．that | D．one |
74.Was it during the Second World War_____ he died?
| A．that | B．while | C．in which | D．then |
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