— Jack said the paper was too hard when he was asked why he failed the exam again..
— Well, _____.
| A．a bad penny always turns up | B．a bad workman always blames his tools |
| C．an early bird catches the worm | D．an apple a day keeps the doctor away |
Without that conversation between them, they would ______ be able to avoid mistakes.
| A．in no time | B．by all means | C．in no way | D．on the whole |
The zoologist is telling the visitors how a horse’s vision differs from ______ of a human.
| A．it | B．one | C．that | D．those |
This book will show the readers ______ can be used in other contexts.
| A．how that they have observed | B．that how they have observed |
| C．how what they have observed | D．that they have observed |
According to a study carried out by an American university, when you eat has ______ on your mood as ______ you eat.
| A．much of as an effect; what | B．much of as an effect; which |
| C．as much of an effect; what | D．as much of an effect; which |
The first decade of the 21st century ______ breathtaking, non-stop development in China.
| A．witnesses | B．witnessed | C．will witness | D．had witnessed |