David was always ______ his best in any danger, but at that moment he froze.
| A．at | B．in | C．for | D．on |
The dictionary is what I want, but I don’t have enough money me.
| A．by | B．for | C．in | D．with |
________ I need is more time.
| A．That | B．What | C．/ | D．Which |
The good thing about children is that they __________ very easily to new environments.
| A．adapt | B．appeal | C．attach | D．apply |
at my classmates' faces, I read the same excitement in their eyes.
| A．Looking | B．Look | C．To look | D．Looked |
