23. “If anything ________ to the patient, let me know at once, please.” the doctor said to the nurse.
| A．takes place | B．breaks out | C．comes about | D．Happens |
After completing and signing it, please return the form to us in the envelope ________.
| A．providing | B．provided | C．having provided | D．provide |
_______the Teachers’ Day ,the students are cleaning the classroom.
| A．In spite of | B．In celebration of |
| C．In search of | D．In place of |
I need to get another dictionary, because cover is dirty and page is missing.
| A．a; a | B．a; the | C．the; a | D．the; the |
—I often see him working hard in his spare time.
—________he has won the scholarship from time to time.
| A．No wonder | B．No doubt | C．No way | D．No problem |
Years ago we didn't know this, but recent science study ________that people who don't sleep well soon get ill.
| A．showed | B．will show | C．has shown | D．is showing |