Although everything seems to have been taken into consideration, ____ accident can happen when the astronauts walk in _____ space．
| A．不填；the | B．an；不填 | C．the；the | D．an；the |
Rain and high winds today _______ to take the place of yesterday’s mild conditions.
| A．expect | B．are expected |
| C．are expecting | D．has expected |
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 |
Teachers _______ be sensitive to the development level of each student so as to help them better.
| A．need to | B．may |
| C．are able to | D．can |
These days strange things ______ happened in the small village, which caused a panic among the villagers.
| A．rarely | B．typically |
| C．gradually | D．frequently |
Your handwriting is like your shadow, ______ is why companies sometimes look at handwriting when hiring employees and courts also consult it when dealing with certain cases.
| A．that | B．this |
| C．what | D．which |