—John, I didn’t ask for the dictionary. Why _______ on my desk?—Oh, I put it there just now in case you needed while writing your composition.

Usually John  __      to school in his father’s beautiful car.

In the near future, more advances in cloning technology       by scientists.

 Jane was disappointed that most of the guests     when she       at the party.

All of the guests         by 9 o’clock , but the host        until 15 minutes later .