We left Xi' an _.___ a very hot summer afternoon.
| A．on | B．in | C．during | D．by |
Can you tell me when the plane _______ to Hong Kong this evening?
| A．would fly | B．has flown |
| C．is flying | D．had flown |
As neither of the two nations would _______, no agreement was reached that day.
| A．give up | B．give away |
| C．give back | D．give in |
It was because of your attitude to your parents _______ they felt so upset.
| A．what | B．that | C．who | D．so that |
Every year _______ foreign visitors come to Beijing to pay a visit to the places of interest.
| A．tens of thousands of | B．ten thousands of |
| C．ten thousands | D．thousands upon thousands |
---- What _______ the number of the students in your school?
---- About two thousand. A number of them _______ from the same junior school.
| A．is; are | B．is; is |
| C．are; is | D．are; are |