His sister left home in 1998, and_______ ever since.
| A．had not been heard of | B．has not been heard of |
| C．had not heard of | D．has not heard of |
. I won’t make up with him ________ he apologizes.
| A．unless | B．lest | C．provided | D．whereas |
. While teaching students, teachers should take into consideration _________ students develop at different rates.
| A．the fact that | B．since | C．as long as | D．despite of |
. The thought worried him much ________ he might fail in the exam.
| A．that | B．which | C．when | D．so that |
.He got up very early that day ________ he caught the first train.
| A．in order that | B．so that | C．in order to | D．so as to |
. ________ they will not come to join us, we have to change our plan.
| A．Seeing that | B．Supposing that | C．For | D．When |
E) Granting that F) Providing that G) Considered that H) While