-How did you like the concert last night?
-I enjoyed it very much, but the dancers __________ a better job.
| A．could have done |
| B．must have done |
| C．could do |
| D．had done |
Some blood types are quite common, others are regionally , and still others are rare everywhere.
| A．distributed | B．contributed | C．obtained | D．Convinced |
--- Oh! You bumped me!
--- I am sorry. But I to catch the coming bus.
| A．try | B．tried | C．am trying | D．was trying |
Jane, I’ve shared just about everything since the first day of kindergarten, spent the weekend with me last month.
| A．who | B．for whom | C．with whom | D．that |
--- What should I wear to attend Mary’s birthday party?
--- Dress you like.
| A．what | B．how | C．whatever | D．However |
This information allows businessmen to keep of their list of goods by showing which items are being sold and how fast they are moving.
| A．sight | B．track | C．touch | D．sign |