A computer can only do ________ you have instructed it to do.
| A．how | B．after | C．what | D．when |
Tom sat under a tree chatting with his friends and _____ his teacher, stood up in no time.
| A．seeing | B．seen | C．saw | D．to see |
---Have you bought any dress while shopping?
---I am sorry to tell you when I tried on all the dresses in the shop and _____ satisfied me.
| A．nothing | B．no one | C．none | D．some |
---Please take these letters to ____ post office ， Jack ---With ____ pleasure, Dad.
| A．a; the | B．the; a | C．a;/ | D．the;/ |
Mr. Blake is very popular because of his good of humor.
| A．sense | B．emotion | C．feeling | D．thought |
—Was it last summeryou luckily got an opportunity to spend your holiday in Hawaii ?
—Not me . John was the lucky dog .
| A．that | B．when | C．which | D．what |