— Tom fell off the bike yesterday, but he is all right now.
— What a lucky dog! He _________ himself badly.
| A．should injure | B． could have injured |
| C．should have injured | D．might injure |
According to recent report, one of the rare animals, crocodile, will be in anger of dying out in 2020s
| A．a, / | B．/, the | C．the, / | D．the, the |
This young tree could not have been damaged ______accident; I believe it was done _____ purpose.
| A．by; on | B．for; with | C．by; with | D．for; on |
Their work other writers ever since.
| A．have influenced | B．has influenced | C．influenced | D．influences |
Barcelona is situated the northeast coast, about five hundred kilometers east of the Spanish capital, Madrid.
| A．off | B．in | C．on | D．to |
All the students ______come from America are here.
| A．who | B．which | C．/ | D．that |