Although medical science ______ control over several dangerous diseases, what worries us is that some of them are returning.
#104618
A
achieved
B
has achieved
C
will achieve
D
had achieved
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Would you please keep silent? The news that the milk contains a harmful chemical _________and I want to listen.
#101847
A
has been broadcast
B
is being broadcast
C
is broadcast
D
is broadcasting
The US President Obama told the students that he ______ by a single mother who were strict with him and wished him great success in his studies.
#103513
A
will have been brought down
B
has been carried out
C
was brought up
D
was about to be cared for
He insisted that he _________ nothing wrong and ________free .
#103397
A
should do ; should be set
B
should do; had been set
C
had done; should be set
D
had done; had been set[
It was snowing hard and Mother told me to put on a thick coat to ______myself from the cold.
#100898
A
Prevent
B
save
C
explore
D
protect
The little boy is dirty from head to foot because he ________ in the mud all morning.
#104514
A
has played
B
is playing
C
has been playing
D
was playing