So suddenly ________that the animals in the zoo looked very frightened during the total solar eclipse (日全食)．
| A．did the sky turn dark | B．the sky did turn dark |
| C．turned the sky dark | D．was the sky turned dark |
The medicine works more effectively you drink some hot water after taking it .
| A．as | B．until | C．although | D．if |
There is a great deal of evidence that music activities engage different parts of the brain .
| A．indicate | B．indicating | C． to indicate | D．to be indicating |
The system has been designed to give students quick and easy to the digital resources of the library .
| A．access | B．passage | C．way | D．approach |
The incomes of skilled workers went up . , unskilled workers saw their earnings fall.
| A．Moreover | B．Therefore | C．Meanwhile | D．Otherwise |
——I’ve read another book this week .
——Well , maybe is not how much you read but what you read that counts .
| A．this | B．that | C．there | D．it |