_______ they are seeing great development, they are still poorer than many countries in other parts of the world.
| A．Unless | B．Since | C．While | D．As |
The decorations were so lovely that they _____ in a short time.
| A．sold out | B．has been sold out | C．were sold out | D．were selling out |
The students _____ are hard-working and ready to help others should be praised.
| A．who | B．whom | C．which | D．whose |
—What’s the noise outside?
—Some children_____ hide-and-seek in the yard.
| A．were playing | B．are playing | C．have played | D．played |
----What do you think of my article, professor?
---- The former part is well written but __________ is just so-so.
| A．the latter | B．the last part | C．latest | D．later |
Much to our joy, John was finally __________ to join in our adventurous journey.
| A．advised | B．agreed | C．hoped | D．persuaded |