She was once trained for better English pronunciation and ________ she ________ obvious pronunciation mistakes.
| A．then; rarely has made | B．ever since; has rarely made |
| C．then; has rarely made | D．ever since; rarely has made |
Mark Zuckerber
g is the founder of the site Facebook , ______ you can have a look at each other’s pictures.
| A．where | B．which | C．when | D．as |
It surprised us all ______ Kate made such big progress in this final exam.
| A．when | B．that | C．how | D．whether |
_______ ninety-nine percent of the panda’s diet is bamboo, it also eats corn, apples and sweet potatoes.
| A．If | B．While | C．Because | D．Since |
The manager demanded that the workers extra hours to complete the task ahead of time.
| A．worked | B．would work | C．work | D．had worked |
to agriculture , the new technology will increase grain production.
| A．Applied | B．Having applied | C．To apply | D．Applying |