Mrs. Black had her left hand ______while cooking.
| A．burned | B．burn | C．to burn | D．burning |
The money ______ you were to buy dog food is gone.
| A．with which | B．from which |
| C．which | D．that |
As the final examination is coming , the students are busy ____ it.
| A． preparing | B． preparing for | C．prepare | D．prepare for |
He likes the birthday presents ______ his friends gave him.
| A． that | B．it | C．what | D．where |
Upon ______ the office, he saw the message on his desk.
| A．he arrived | B．arrived at | C．arriving at | D．arriving |
— Where’s Emma?
—I can’t say for sure where she is, but she _____ be out shopping.
| A．can | B．should | C．must | D．may |