—Have you thought of the topic for the composition?
— Not yet．I _____ it very carefully, but I haven’t decided．
A．will consider B．have been considering
C．had considered D．was considering
—Have you thought of the topic for the composition?
— Not yet．I _____ it very carefully, but I haven’t decided．
A．will consider B．have been considering
C．had considered D．was considering
B
考查动词时态。由Not yet．以及 but I haven’t decided．可知，是一直在考虑，所以用现在完成进行时，表示一直在做这件事。