(1) 句子结构。
本句的结构： We (主语）don’t _______ (谓语） any difficulties (宾语） in completing the project (状语）；一个条件状语从句 so long as we keep within our schedule and budget。
(2 )选项词义。
A. forestall v.先发制人，预先阻止；垄断，囤积；领先
B. formulate v.规划；用公式表示；明确地表达
C. foresee v.预见；预知
D. forfeit v. ( 因犯错）丧失，被没收
本句的大意为“ 只要不超出计划和预算，完成这个项目就不会有任何困难”。在四个选项中，只有foresee最符合题意。
[知识拓展]
(1)语法拓展：条件状语从句。
英语中引导条件从句的从属连词有 if，unless， provided (that)， providing (that)， as long as， so long as， on (the) condition that， for fear-(that)，lest， in case 等。
e.g. Well go as long as the weather is good.
只要天气好我们就去。
He wouldn't be late unless he were ill.
除非他生病，否则不会迟到。
(2)词汇拓展：forestall与 foresee。
①forestall v. to prevent sth. from happening or sb. from doing sth. by doing sth. first
e.g. Try to anticipate what your child will do and forestall problems.
尽量预见你的孩子会干什么，并预先阻止问题发生。
②foresee v. to think or know that something is going to happen in the future
e.g. No one could have foreseen (that) things would turn out this way.
谁都没有预料到事情的结果会这样。