In order to find the missing boy, the young couple all they can over the past twenty-four hours.
| A．do | B．did | C．have been doing | D．had done |
She negotiated with her new boss and accepted the position ______ there would be opportunities for advancement.
| A．in case that | B．on condition that | C．for fear that | D．in order that |
______ to too much sunlight, as is generally considered, will add to the potential of catching skin cancer.
| A．Being exposed | B．Exposed | C．Exposing | D．To expose |
— Mr. Smith was really helpful when you were in financial difficulty during those years.
— Definitely. I can never appreciate his kindness ________.
| A．seriously | B．well | C．enough | D．properly |
— ______ the woman with the baby come over? We have a seat here.
— Thank you, sir. Actually I do have my seat here. But my baby likes to look out of the window.
| A．Would | B．Shall | C．Must | D．May |
With your help, there is no doubt ______ our plan is meant for will work out successfully.
| A．that what | B．whether that | C．what that | D．that whether |