At that time I had no idea ________ I could hand it to him without being seen.
| A．if | B．how | C．which | D．that how |
--Oh, Kate! Glad to see you again. It ____my pleasure to see you here.
---Me, too.
| A．adds in | B．adds to | C．adds up | D．adds up to |
Only when he got there _____how much damage had been caused.
| A．be realized | B．he had realized |
| C．had he realized | D．did he realize |
The work was difficult, but Tom’s ____expression showed that he would finish it in time.
| A．stubborn | B．determined | C．concerned | D．surprised |
Tim’s house in NY is much smaller than ours, but it's three times ______ expensive．
| A．very | B．so | C．too | D．As |
They are talking excitedly about the writers and their books ________ interest them.
| A．who | B．whom | C．that | D．Which |