Much new high technology has been introduced from America, ________ a great increase in the production of the company.
| A．resulting in | B．having led to | C．contributed to | D．caused |
She was surprised to find the fridge empty; the child _____ everything!
| A．had been eating | B．had eaten |
| C．have eaten | D．have been eating |
This coastal area a national wildlife reserve last year.
| A．names | B．named | C．is named | D．was named |
In 1942，Columbus_______ on the of the Bahama islands, but he mistook it for an island off India.
| A．lands | B．landed | C．has landed | D．had landed |
．-----Tommy is planning to buy a car.
----I know .By next month, he______ enough for a used one.
| A． saves | B．saved | C．will save | D．will have saved |
In the last few years thousands of films all over the word.
A .have produced B. have been produced
C. are producing D. are being produced