Some experts are warning that the step the US government has taken to deal with the current crisis is ____of much risk.
| A．ones | B．one | C．that | D．those |
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No matter how, it is not necessarily lifeless.
| A．a desert may be dry | B．dry a desert may be |
| C．may a desert be dry | D．dry may a desert be |
Twenty students want to attend the class that aims to teachto read first.
| A． | what | B． | who | C． | how | D． | why |
What are you doing out of bed, Tom? You're to be asleep. ,
| A．supposed | B．known | C．thought | D．considered |
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