A landing on Mars is within the _____ of current physical theory.
| A．scheme | B．scope | C．scrap | D．scale |
Never before _______ so highly successful in his attempts to forecast the weather accurately on a small scale.
| A．man has been | B．man is |
| C．has man been | D．will man be |
–I’m sorry. I’ve left my wallet home. So I don’t have enough cash for the meal.
-- Take it easy. _________ .
| A．It’s a piece of cake | B．It’s my pleasure to pay you |
| C．It’s my treat | D．It’s at your expense |
Many experts believe that teachers’ development is ______ the key to better education lies.
| A．that | B．what | C．where | D．which |
My money _________. I must go to the bank to draw some of my savings out before I have _______ in hand.
| A．has run out; none | B．is running out; none |
| C．has been run out; nothing | D．is being run out; nothing |
She had no idea how it ______ that her husband met with trouble again.
| A．came up | B．came about | C．came out | D．came across |