Good heavens! There you are! We _____ anxious about you, and we ____

Good heavens! There you are! We _____ anxious about you, and we _____ you back throughout the night.

#104714

are; expect

were; had expected

have been; were expecting

are; were expecting

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—Did you find the missing couple in the mountain yesterday?—No, but we ________ to get in touch with them ever since.

#104758

have tried

have been trying

had tried

had been trying

Although medical science________ control over several dangerous diseases, what worries us is that some of them are returning.

#101311

achieved

has achieved

will achieve

had achieved

With the country’s population reaching 1.6 billion in the mid of this century, most of China’s rivers, including the Yellow River, ________.

#102803

is drying up

will be drying up

dry up

have dried up

--Have you seen Tony recently? --No, but I ________ dinner with him on Sunday．

#103008

would have

have had

have been having

am having

---When did you move to Beijing?   ---Last year. But I _____ in a school in Japan for 8 years.

#100774

has taught

taught

has been taught

has been teaching