Generally speaking, ______according to the directions, the drug has no side effect.
| A．when taking | B．when taken | C．when to take | D．when to be taken |
If you sleep short of 7 hours, you are three times________ to catch a cold.
| A．possible | B．certainly | C．probable | D．likely |
—It’s so nice to enjoy the sunshine here on the green grass.
—You________us a right place.
| A．had introduced | B．are introducing | C．have introduced | D．introduce |
—Is your school bigger than ours?
—Yes. I guess it is________your school.
| A．as twice the size of | B．as two thirds big as |
| C．bigger than half | D．one third bigger than |
The disease, ________, could spread very fast.
| A．unless well controlling | B．if not well controlled |
| C．when not to control | D．although not being well controlled |
To prevent cybercrime more efficiently, it is important to make new laws and create international standards for them similar to________concerning international airspace.
| A．that | B．what | C．one | D．those |