6. The existence of many stars in the sky............. us to suspect that thre may be life on another planet. A. lead B. leading C. have led D. leads 7. Be careful with your gun! You may.............. somebody. A. injure B. wound C. hurt D. ache 8.Throw away that old vase. Its....................... . A. value B. valuable C. invaluable D. valueless 9.- Is the lift is working?. - No , its.............. Lets use the stairs. A. out of work B. impossible C. in danger D. out of order 10.These people .....................for the most successful company in the town. A. are seeming to work B. seem working C. seem to be working D. are seeming to be working 11. People think that an apple .......................... is good for you. A. in a day B. for a day C. for every day D. a day