摘要：29．Don’t disturb me．I the letters all morning and ten so far． A．write; wrote B．am writing; have written C．was writing; wrote D．have been writing; have written
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Don’t disturb me．I ________ the letters all morning and ________ ten so far．
[ ]
A．write; wrote
B．am writing; have written
C．was writing; wrote
D．have been writing; have written
Don’t disturb me. I ______ letters all the morning and have written ten so far.
| A．write | B．was writing | C．have written | D．have been writing |