The president, together with his bodyguard，__________ to the nuclear station __________ there was an accident 20 minutes ago.
| A．have come; which | B．came; in which |
| C．has come; where | D．came; in which |
—What happened?
—Oh，a bee appeared on Kate’s dress，and her sudden________ of cry scared us.
| A．break | B．burst | C．attitude | D．express |
________our earth，or else it will be no longer fit for us to live on.
| A．Protecte | B．To protect | C．Protecting | D．Protect |
—Look！He’s running so fast!
—Hard to________his legs were once broken.
| A．know | B．imagine | C．realize | D．find |
—I saw no more than one motor car in that shop.Will you go and buy________？
—No，I’d rather buy________ in other shops.
| A．one；one | B．it；one | C．one；it | D．it；it |
Leave your key with a neighbor ________ you lock yourself out one day.
| A．ever since | B．even if | C．soon after | D．in case |