It was _____ it raised so many difficult questions _____ the book took a long time to come out.
| A．that; that | B．since; which | C．because; that | D．because; which |
—Don’t always answer me with a simple “Yes” or “No”. Explain ______possible.
—OK. I’ll try my best.
| A．whatever | B．whenever | C．however | D．whoever |
This is such a wonderful film ______ we have never seen before.
| A．that | B．as | C．which | D．what |
—Excuse me. Did you notice whether the No. 108 bus had gone by?
—Not ____ I’ve been standing here.
| A．as | B．when | C．since | D．while |
___ the Internet is bridging the distance between people, it may also be breaking some home or will cause family problems.
| A．When | B．While | C．If | D．As |
I felt somewhat disappointed and was about to leave _____ something occurred which attracted my attention.
| A．unless | B．until | C．when | D．while |