The dinosaur’s eggs are found by explorers in the _______
| A．1920s | B．1920’s | C．1920s’ | D．1920’ |
He wrote many children’ s books, nearly half of____ were published in the 1990s.
| A．whom | B．which | C．them | D．That |
The meeting will be held in September, but____ knows the date for sure.
| A．everybody | B．nobody |
| C．anybody | D．somebody |
_____ the difference between the two research findings will be one of the worst mistakes you make.
| A．Ignore | B．Ignoring |
| C．Ignored | D．Having ignored |
Only after talking to two students ________ that having strong motivation is one of the biggest factors in reaching goals.
| A．I did discover | B．did I discover |
| C．I discovered | D．discovered |
Don't sigh over the small achievement. _____, and I'm sure if you keep at it, you'll see the light at the end of the tunnel!
| A．Lookers-on see most of the game |
| B．Constant dripping wears away the stone |
| C．The world is your oyster |
| D．Lost time is never found again |