I _______my homework as soon as Lan goes here

1. I _______my homework as soon as Lan goes here.

a. will finish      b. will be finishing      c. finish       d. will have finished

2. Ask her to come ad see me when she ________ her work.

a. finish         b. has finished         c. finished      d. finishing

3. After you finish your work, you________ a break.

a. should take    b. have taken        c. might have taken     d. takes

4. Oil________ if you pour it on water

a. floated b. floats c. will be floated d. float

5. When he returned home, he found the door________.

a. unlocking b. unlocked c. to be unlocked d. have unlocked