When a student asks it is worth staying up doing their lessons, a teacher may find it difficult to answer.
| A．that | B．what | C．whether | D．how |
Professor White has written some short stories, but he is ______known for his plays.(NMET 1998)
| A． the best | B．more | C．better | D．the most |
It is always difficult being in a foreign country, __________if you don’t speak the language.
| A． extremely | B．naturally | C．basically | D．especially |
It is generally believed that teaching is ___________it is a science.
| A．an art much as | B．much an art as | C．as an art much as | D．as much an art as |
Several weeks had gone by____________I realized the painting was missing.
| A． as | B． before | C． since | D． when |
_______________you call me to say you’re not coming, I’ll see you at the theatre.
| A． Though | B． Whether | C． Until | D． Unless |