_______ on the American Civil War, the book attracted a large number of readers when it was published.
| A．Based | B．Basing |
| C．Having based | D．Being based |
Daisy ______ all the housework, she dropped herself into the sofa, sighing with relief.
| A．finished | B．had finished | C．having finished | D．finishing |
Fortunately , the adventurers brought the GPS with themselves, they might have been lost in the desert.
| A．of which | B．without which | C．in which | D．about which |
—How many practical plans has your colleague made this month?
—. All have turned out disappointing.
| A．None | B．Nothing | C．Nobody | D．No |
— Can I borrow your tape-recorder?
—No. The last time you borrowed it, you _______ it for a month.
| A．kept | B．had kept | C．are keeping | D．have kept |
It is reported that a storm is on its way, but the weather today is ______ warm and sunny.
| A．frustratingly | B．fortunately | C．surprisingly | D．hardly |